I see your point and kinda agree. What I think here is that the story follows the MC. You get the Maya Josy scene only if the MC stays with them. In which case of course the MC will be a subject they revolve around. If the player decide to be just friends, then the story will follow the MC and not the girls. In some scenes they show affection for eachother (library, flashback). I personally do not need them to hang on eachothers tounge all the time to get that they are together. As for Mayas sexuality, it still unceirtain. She has some kind of affection towards the MC but at the full on sex scene the only comment she made was that, it feels wierd. Which gives me an interest on how this will turn out.
But the curious thing is that there are a lot of scenes in the game where the MC is not present and that do not actually revolve around him in order to build up those character-specific stakes and motivations. Take for example a lot of Quinn's scenes in Episode 6. However even beyond that, the game makes the Maya/Josy storyline central to the player regardless of the choices made, so at the point it is valid, at least to me, to be critical of how it is told.
To give an example, if the cliffhanger in Episode wasn't Maya's father, I wouldn't care at all about them or have any issues with this. I would actually be happy as this would be the first episode that didn't aggressively force that relationship on the player. However, that was the choice the game made which then kind of asks what it did to do build such a cliffhanger? And the answer is pretty much nothing.
My issue with Maya's storyline isn't that she thinks she actually might like guys, it's that there's no indication within it that she finds women at all attractive sexually, is constantly initiating sex with a guy and expressing her deep enjoyment of it, at least based on everything I've seen. All that might not be for me, but it would be stupid to expect every storyline to be. My problem with the storyline is that Maya's struggle and stakes are completely built on her risking losing everying by being true to being gay. Which the story itself does not support at all.