Well good thing a writer is present to help you with this right?
Let me deconstruct your entire issue from a neutral story writing position so you understand why the things you may not like are not there for shits and giggles but have actual substance and need to be there for the story to work. (And i can understand you as i am not fond of lesbian stuff myself either but in this game i always watch them for the reasons i will explain)
I will not start to attack your personal opinion on things like what you like or dislike but the story in and of itself. So don't get mad at me when i try to point out what is going on and why you didn't pay attention when you should have. This is no fanboy rant either but simply me doing stuff i am good at. Writing and understanding stories, dialouge, narration, character growth, plot elements, tension arc and all the other writer mumbo jumbo no one but me cares about
1. The MC was not only on the trip because he has a license but because he is the caretaker or father depending on your preference and all three share the same issue. Grief over the loss of a loved family member. All three take this trip to finally accept the loss and move on with their life. The entire Trip is for this exact purpose. It may have started for a different reason but as the story moves forward this is the goal all three try to achieve as the story unfolds.
There are only 2 ways a family will react to the loss of a family member in their time of grief.
Option A: They become more close because shared pain is less pain. The love and caring towards each other becomes more frequent and each member of the family starts with emotional support for one another.
Option B: They do the exact opposite. Get emotional distance and the tension is always high. A small issue can set of an emotional nuke inside someone which mostly ends up in figths and arguing. Alot of arguing.
The story starts at Option B. Everyone is distant in his own regard and handles the grief on their own. As the story moves on all three start to approach Option A. The entire journey of this game till chapter 5 is a family handling grief and how it influences each individualy and how they try to handle it on their own till they realize they can rely on each other for emotional support and share the grief to bond stronger and move forward. Together and stronger as ever.
Once this is achieved and everyone is open for that approach it is Denise that starts influencing both the MC and Macy to the idea of a more romantic and lust driven relationship between the three of them. This is the current point we are at.
2. The Lesbian scenes are maybe not to your taste but serve the purpose of Denise overcoming her shyness and having a better relationship with her always grumpy and many times aggressive sister. Macy on the other hand learns to be vulnerable and letting someone close, being intimate and share feelings once again. Under all that hate is a very fragile and hurt little girl that yells for help.
The lesbian scenes are not there for shits and giggles but actually serve a emotional bonding process when you get intimate with someone. It is no coincidence that both Denise and Macy once their share certain moments together become more and more open with stuff they want, stuff they talk about between each other and feelings they realize.
This also is a key element for Denise to push Macy towards a relationship that involves the MC while also destroying the emotional wall Macy has build in order for her to handle her grief.
3. Disabling it would mean you miss out of vital story informations like their relationship growing, Denise overcoming her shyness and Macy opening up and feeling vulnerable in the process letting someone this close. Which is also visualized in the scene where Denise unshackles the Beast Macy who thinks she doesn't deserve freedom or happiness despite in secret crying for help for the monster she has become when telling her mother "i hate you" the day she died. In her mind she deserves nothing good in her life.
Both Denise and Macy grow and bond in those Scenes because they share their feelings, thoughts and insecurities. This also again serves the purpose to move the story foward for a romantic relationship between the three.
4. If you had paid attention to the story you would know why this can not and will not be disabled. As i explained in Point 2 and 3 this serves as story element and character growth. The scenes may not be to your personal preference but the dialouge and writing in those scenes serve a purpose. To disable them would mean that the audience or players would miss very important information and fail to realize why certain actions move forward after it.
To explain this better lets compare it to something you probably know.
Assume this is the movie trilogy matrix. But since we do not like certain sex/romantic/intimate scenes we cut out the entire trinity arc in it. The character still exists but we simply cut out every bonding, romantic or sexual moment from all three movies. We would end up with the entire story making no sense any more because key elements would be missing. Since you are surely familiar with said movie i leave it to your imagination what happens to the movie, the story and the entire plot if you take those scenes and the dialouges in it out.
The trilogy would literally make no sense anymore. Normaly i would agree that some romantic/sex scenes in most movies or stories serve no purpose or sometimes leave a bad taste in the mouth of the audience who do not like such stuff.
But in this game or the matrix trilogy they are actually a plot element that holds the story together. If you take anything from that out the story doesn't work anymore and the entire plot falls apart.
And while you might not realize this it is actually pretty fucking hard to achieve such a plot element that becomes vital in the first place. Cause for something to become a vital plot element you need to be able to branch the entire story in a way that without it nothing works anymore.
Matrix is a prime example for this one as the love story appears to be a side story but is actually the driving force behind almost everything. Go rewatch the trilogy and you realize what i mean.
And yes while my explanation was long and i thank everyone for reading this far i really tried my best to explain from a neutral point of view why you can not take the lesbian scenes out for the story to work properly.
If you still feel that you lost all attraction to the girls after my explanation and why those scenes are important i can only give you the advice of replaying the entire game and reading and following the story and i am pretty sure you will rethink your approach