People have to understand that this is not a dating sim. This game evolves around a story and it seems Maya's (and Josy's) story is the main story DPC wanted to tell in this game, so the MC will be around them either way. The problem with the narrative is how you can build a true friendship when you have been romantically rejected. Because of course that situation can happpen in real life, but I still don't feel the common steps for it are rightly portrayed in that game's route.
As
shazba has said above, we see the MC stating that, even if rejected, he feels it's closure. But for many players that's a hard thing to achieve as easily as the MC seems to do (and it doesn't really suits his characterization till that point: regardles how dikish or chickish your choices would have been, he seems to be too much emotional to just accept that as rationally as he does). It kind of reminds me te whole mourning process in AL but in a worse version: there you have a devastated MC who's slowly recovering his life and it takes him a year to be on his own foot again (and that's understable), but for the player it comes in just a minute after a hard shocking moment and that's difficult to digest (I was even turned off by the last sex scenes as I was not mentally in the mood for them). Here we have a romantic rejection that is always hurtful, and in this case especially so for players invested in M&J that only made some minor wrong choices (like being a bit more DIK sided or just not too pushy with those conflicted girls), but the MC quickly forgives that and everything goes on as if nothing has ever happened. Well, that's just not reasonable for a big bunch of players, so there a writer has a problem.