Epstein ran a vast diversity of activities catering to a wide range of illegal interests. The letters paint him as a concierge of sorts.

The very chummy emails from famous attorneys and celebrities acting like Epstein is the high priest of their penises are really weird but also establish a weird new context for "friendships". Sic: Alan Dershowitz admiringly called Epstein a "louche" in a letter.

It's like a fusion of a fraternity and a boy's circle jerk.