Spoilers for the game I guess
The bad endings are fine if there were part of a cathartic dramatic arc or that revealed new facets of their character, but I am very against bad endings framed in a sexual manner, which is where you are very obviously going with in Asami's route.
For example I think Noriko suffering her fated death would be reasonable given the setup and the stakes involved, Asami or Yasuka being driven into sex slavery being given illustrations is the exactly sort of content i would be against.
You are being disingenuous if the "consequences to your actions" are just exploitative fetish content.
I want to clarify that I am not even talking about ntr here, I think the relationship status are irrelevant.
I think this is true even if optional, because that's time taken from development to make content that is divisive and a non trivial amount of people (25% in the worst scenario, which is kind of a ridiculously high number btw) don't want existing in the game, which is different from a bad ending that you might not want to personally get but appreciate it being there.