i’ll start
>PhysicsForums
a bunch of autodidacts with serious holes in their knowledge posturing with long winded crap that they convince one another they know what they’re talking about
>nLab
a bunch of category theorists who copy paste quotes from high level research and convince they know what they’re talking about with pictures that have arrows when really the whole thing lacks any quantitative substance
>LessWrong
a bunch of mentally unstable borderline schizos using fancy words to create a quasi-scientific cult
>Academic Twitter
a bunch of girls and pro-feminist some professors retweeting how strong and brave the underrepresented STEM people are, mysteriously with 0% content related to actual science
>/sci/
a cesspool of troll posts by poltards but actually occasionally a post or two per thread blow away what you find on the above places
>Quora
used to have some quality science but now it’s flooded with “scientists” whose credentials are from the third world and hardly can speak english
>StackOverflow
also used to have some quality stuff but now it is just an overly hierarchical circlejerk with no valuable discussion
>Wikipedia
used to have good content but also got overrun by a clique of moderators who manage to alienate any good new content