Dark is right. The anti-Q/leftist/TopMindsOfReddit subs are fucking scary brainwashed too. Total echo chambers. The main USA politics board, Politics, is has the ShareBlue brand seared into its mods asses. They own the majority of the default subreddits too, thanks help from site admins and executives.
TheDonald is mostly ok, but there's a shitload of concernfags and Q-haters mixed in. The mods don't mess with crumbs as long as you're not talking about Q, but the anti-Q mindset has a lot of good folks turned around (and constant bad guesses about frog-marching the Cabal doesn't help that. The biggest problem is that most good content gets slid by downvote algorithms built into the site, external forces, and external bad actors patrolling.
Outside of TheDonald, you have mods deleting anything outside their narrative and banning people at whim.
The good news? Normies are waking up to the incredible censorship, bias, and vote manipulation. Like Twitter, it's still one of the higher-visibility places on the internet, and has been important to spreading memes.