Sounds to me like someone has had a lot of different hair colors.

Anecdotes aren't data but when it comes to weird people, and non-natural hair colors, I've seen a lot of overlap. Practically 1-to-1, save for a few of the e-girl, OF demographic doing it to make money via cosplay and the like.

I've never dyed my hair but I do think it's noteworthy when someone is using biased language when reporting their side of a story. Calling anyone a "weirdo" is a good signal for how you might treat someone.