r/PublicFreakout's constant unrestrained 'isms, especially towards trans, women, and African descended. I only was subbed for the occassional interesting post and to call out the bs for those who couldn't see it.
r/JustUnsubbed's (iirc) noticeable political shift towards (i'mma say it; cover your eyes, children!) the Right after the recent situation with the game that shall not be named and she who shall not be named. Also, see above.
People shitting on and lying about subs specifically made for marginalized groups. e.g.: When r/BlackPeopleTwitter was blessed by Black Jesus with his "Country Club Thread" flair, people elsewhere started calling them racist and supported their claims by over exaggerating the filtration system as "only Blacks allowed" when there was a whole-ass stickied post explaining that people just needed to claim to be Black, BIPOC, or an Ally and prove it by whatever means the mods dictated. My Afro-ass asked if I could just get the Ally userflair and was told (privately and kindly) that, and I'm going off memory here, "Just like we don't allow Blackface we don't allow Whiteface." 🤷🏿♂️