> Not even the perpetrators of famous unsolved crimes receive this much scrutiny.

The zodiac killer still has an active subreddit! https://old.reddit.com/r/ZodiacKiller/

> Maybe hurting him or trying to profit off of the knowledge somehow, or even just becoming famous for being the person who found Satoshi Nakamoto.

Yeah, there's likely some pride/ego involved, and sadly trying to hurt the person most responsible for cryptocurrency.