He was really popular on twitter, and if he says mastodon's worse despite having a smaller audience there, I trust his judgement. Literally his pinned toot.

"First replies shown are the ones the author replied to and/or liked" seems like an obvious, simple, and transparent algorithm. Like youtube comments. Give lazy reply guys an opportunity to see without scrolling down that they aren't as original as they think they are. The fact that this isn't implemented in even a basic form is absolutely insane and shows a very fundamental ideological disconnect between people who want "open twitter with decent moderation" and whatever the fuck it is that the mastodon OGs/devs are trying to achieve.