I'm frankly amazed that enough people have the time to track this nonsense and stamp it out that it ends up being self-correcting. It's not just about time, either; chasing bad edits and prosecuting bad users must be a huge chore in terms of the sheer amount of work needed. I always find it amazing how horrible the tools are (like how almost anything, including having discussions, is done by editing pages; how can anyone have a discussion in such a disorganized way?), which surely must be a hindrance to productivity or to the ability to detect and deal with constant abuse. But seemingly it works. Maybe there are better tools that pro-level admins know about?
[1] https://en.wikipedia.org/wiki/Wikipedia:Long-term_abuse/Anan...
Sometimes perfect is the enemy of good enough.
> ... also known for hoaxing at List of Crayola crayon colors. Obsessed with inflatable, bursting, popping, and bouncing objects
https://en.wikipedia.org/wiki/Wikipedia_talk:Long-term_abuse...?
Therefore, if legal problems arise with these pages, they probably will just delete the legally problematic info and hide every edit done before.