It's more like some kpop stans is too sensitive? or because they have so many antis I don't know why. Having tattoos or making jokes with other member can cause scandal. Even having a girlfriend/boyfriend can make someone lose popularity too. It's weirder for me if they never dated in their entire life just because they love their fans...
Until stuffs like that loosen, I understand if they limit their actions even interactions with someone just to avoid scandals. It's because they have to, they don't have other choices. But I never find idols boring or fake because of this, just wish that people can loosen little bit for them