I wish fandom had migrated elsewhere the first time Bumblr decided to alienate a big chunk of its userbase in 2018.
Instead, half of fandom (me included) clung to Tumblr while the rest scattered to Twitter, Instagram, TikTok, and Discord. Fan spaces became increasingly insular and inaccessible. Twitter allowed NSFW, sure, but it was already a Nazi bar, and an algorithm-fed drama generator. Now it's a Nazi-owned fascism generator, and so many people are still there.