Hey, there was a lot of cuckolding in Pandora Box 1 too!
Hey, no kink shaming ;-)
But seriously, it seems for any thing that is a sexual thing, there are people that hate it and people that love it. NTR as it is called currently, induces strong feelings. So those that do not like it, are often activly repulsed by it and not only indifferent.
And one should never forget that this is games and not the real deal. Just because you like to watch for example gang-bang pron does not mean you want to participate in a real one. Same principle as shooter games.
tbf it is kinda skippable in pb1. And the boyfriend does lots of cheating as well.
And I am not sure what people actually mean with cuck/ntr. Because it basically only means cheating or being cheated on. But the meaning seems to be shifting to a threesome where the cheaters have the sex and the cheated has to jerk off and or be humiliated.
There is even a scene in pb1 where he has fun with another girl and she watches and masturbates.