Stylometry works. I've seen it used it cases where the individual was identified from a group.
One thing that is telling about the Epstein case study is how long it has stayed in public view. Pizzagate, which involved more powerful people, was shut down faster than I've ever seen for anything else. I still remember and have archived the more extreme content it's sick.
I probably don’t want to see it, but what kinds of people and activities are in this Pizzagate content?
Pizzagate and Epstein are the same thing
They are not. Completely different groups.
Pizzagate was 4chan fanfiction. The Epstein files are real enough to have real consequences, although mostly for people outside the US accountability shield.