Wikipedia also tends to suffer from fiefdoms, where even seemingly low-controversy articles become impossible to edit, as someone has decided that article is now their personal pet and they'll spend an absurd amount of time undoing and preventing other people's edits.

The same applies on a larger scale with moderation. There are plenty of poorly-sourced database-like stub entries for STEM subjects, but try to make a page on a "softer" subject and there's a pretty good chance someone will try to nuke it with WP:PROOF, WP:NOTE, and/or WP:OBSCURE if it isn't perfectly fleshed out in the very first draft.