I don't think it's that bad with Undertale, actually.

I'm usually first to get tired of something overly popular, so I assume that if the whole Undertale boom didn't sicken me when I didn't give a **** about the game, it couldn't have been that bad. It actually convinced me to check it out after some longer time. Especially posts and comments involving soundtrack - that **** was too cash to pass up.

Hell, I even checked its rule 34, as I do with everything that can get me curious enough, and most of it wasn't actually as repulsive and bizarre I was afraid it would be. Sure, a lot of wrong stuff, but other fandoms have it worse.