I get immersed in games fine, but self-insertion is something that always seemed kinda odd to me. It's weird when anime tries to do it, weird when games try to do it, and especially when porn tries to do it.
From my standpoint, I just want to see porn on screen. I don't give a crap if the PC is involved in the porn or not the PC involved, as long as porn is happening. I'm not personally involved either way so not much of a difference. Heck, I don't even play my own gender in these games, because why add more dudes?
And, tbh, there's no NTR in this game like...at all. Someone who was actually looking for NTR wouldnt even give this game a second look. NTR involves stealing, and noone in this game ever gets stolen, its just happy open sex all around that everyone is cool with.
I dunno if people are forgetting the original game, but there were actually plenty of scenes of your companions banging each other without your input. Heck, one of your companions would bang minos until you stopped her and also alluded several times to other flings she had on the side.