I do think this is the heart of the issue. Maya's lies of omission and the fact that both girls give the MC serious competition are problems, but all of that would probably have been manageable if the story didn't hype the crisis to the Nth degree by having the MC storm off then spend the rest of the episode whining about it. Rather than try to help the player see it from the girls' perspective, we are encouraged to embrace the outrage for the sake of the drama.
Even worse, despite all this buildup the issue is just dropped by the end of the episode. The focus of the library scene isn't on what the girls did to the MC, or even what he did to them. It's all on what they did to each other; patching up with the MC is quite literally an after thought. Even that can be made worse by the fact the game will sometimes choose NOT to do so - and never explain why! Suck it, player!
All that built-up narrative tension had to go somewhere, and with no proper channel it just exploded. It's no wonder Maya got burned in the resulting firestorm. Josy too, but Maya was the far more prominent character in the story, so it's natural she takes the brunt of it. Which is a pity because I find both characters likable and believably flawed.
