IRL and a game are not the same. When i started to play AVNs i kept seeing NTR warnings and assumed it was something illegal. When I found out what it was I was, and still am, baffled that anyones is bothered by what happens in a made up game. IRL I would understand, but I am not the MC and the LIs are not cheating on me. I'm wary of even saying "cheating" becasue i've heard people get upset about past experinces of game characters and call it NTR and when the LI is with another girl for sex its called NTR. I woudnt want to miss any good scenes because of sex not featuring MC. I would ask if NTR haters love the MC so much they dont want the MC's feelings to be hurt, but I tend to think its a case of people over identiying with the MC to the point they think they are the MC.
Don't want to cause any upset, if NTR bothers you thats fine, but I think those unfazed get the better experiance as they are not self censoring. And I imagine they are equally mystified by why this would bother someone in a game.
Not being bothered by NTR in a game does make anyone a cuck IRL. NTR IRL maybe, but not in fiction. As for NTR being hot, I think you either hate it it or its simply not a even a thing. I hear all the time people saying No NTR, ive never heard anyone ask for some NTR. Im sure some people ahve it as fetish, there are fetishes for everything, but I firmly believe its only a thing for those who don't like it, to everyone esle i think its mostly a cas of "what are you on about?"