Not infuriated that they don't want that, just that many of them absolutely lose their shit and/or quit a game even if it contains that content as avoidable. I never want to force my tastes on someone, so they should accept that people like what they like and as long as it's optional/avoidable, to just leave it be. Anyway, what you quoted me for was replying to someone's reply about the amount of warnings before reaching said content. I think a better solution to that is before even starting the story part of the game, have a setup screen up that says, "Do you want to enable Sharing/Swinging/NTR?" and then use their response throughout to game to either enable or disable those situations.
As for your question about who, I would say have it be optional for each of them...or probably better, there are obviously some characters that are seem to be written to have that sort of personality, (Ms. Welch, Mrs. McGee, Brandi, Tammy). Of course, should always be optional for folks who just aren't into that.