I don't know about that. I know for instance you can close off the Sage route already. Will the doors that are closed have a way to open them in the future? Not sure, but only Pinkcake knows truthfully. However, if Maya/Josy drama continues to infect the story, there better be an option to cut them off completely. My MC has zero interest in even talking to them for awhile. They can run off and get married, just so long as they vanish. I'm honestly sick of them, and the DIK MC should have been able to tell them off when rejecting them.
I suppose it's possible to close off certain routes like in AL, but unlike AL I feel like it would be harder to avoid these characters. Josy and Maya, for instance, still need to do their scavenger hunt challenges and Maya has this plan to get out from under her Dad's thumb. Both of these could have the MC be involved, either deliberately or circumstantially, on a friend basis and depending on how things go and choices made, it could lead back to romantic involvement.
Similarly with Sage, even if it's been closed off, whatever she's involved in with the HOTs could come back negatively on her and she could come to the MC for help which, again, could give the option to rekindle a relationship.
In both cases, it see it as being like Rena in AL; you can choose to avoid all intimate interactions with her, but you're still involved in her story and trying to help her. I know that AL had path closures, but I just feel that, given how potentially large this game will be, it feels a bit premature to fully close off a relationship path this early when there's still so much of the story left and so many possibilities for where each of the characters stories can go.