That's always been a big thing on the internet, or at least since I started using it regularly (early 00s).

I remember a whole thing where back in the mid-00s a prominent Let's Player spent a portion of a video publicly telling someone who'd applied for a spot as a guest commentator to self-harm because he'd Googled the applicant's username and found out he wrote an erotic fanfic with two consenting adult characters. The LPer's viewers more or less unanimously agreed that this was a cool and normal thing for the LPer to do and that the applicant had it coming.