The problem is not your taste, it's that people, despite being like that, try to want to talk about principles, that it's bad for a girl to have a partner and that it's bad for her to have sex because that makes her a bitch. the immersion is something normal I am not going to say that it is bad or good, It's just the way you feel about the game and how you want to play it.
So Just as you have your tastes, the developers also have them, so trying to impose things is not the most honest thing to do, especially when you try to talk about your tastes and criticize others.
I don't know if you were talking about this, but since it's something that has been discussed. In my case I don't find it problematic that the FMC has several LIs (I suppose that apart from the 5 confirmed guys it's possible that some girls are too). In reality, the fact that there are two protagonists is a bigger problem than this; however, if they don't share LIs (as I think the Dev has already said) and we add that one is male and one is female, then I have fewer problems with the multiple protagonists tag.
Personally I prefer that the LIs of the MMC only have sexual relations with him (but I can accept that the LIs have sex between each other, since I assume that they will all be female, and I guess it's the only sex outside those with the MC that I conceive of as acceptable). Regarding the FMC, I also prefer that the LIs only have sex with her (unless there are multiple women, to whom I apply the same restrictions as to MMC LIs). It may seem strange, but it's a matter of point of view: If we talk about each of them having their "harem", I think they should both work under the same principles (no gay sex is one of them)
That being said, I have to point out that lesbian sex is not to my liking, as I find it boring. If I can prevent it from happening (or avoid seeing it), I do, but as long as it's not NTR, I accept it even if I can't avoid or skip it.