While Facebook’s recommendation algorithm definitely plays a part here, most of this analysis could have "Facebook " replaced by “the internet” without changing any of the meaning. The same hate speech is also spread across WhatsApp (which caused WhatsApp to put a limit on the amount of times you can forward a message) and every other messenger.
Facebook’s automatic hate speech removal system may be pitifully ineffective, at least they have one. Here on the Fediverse, we have a slur filter, just sometimes, and even fewer moderators per user than Facebook has.
And, despite Facebook’s role in helping spread hate speech as a large platform and refusing to proactively go after such speech, here’s how the rest of your conversation will go:
“Hey, admin, why can’t I follow my mom on threads from your instance?”
“Because Meta facilitated genocide in Myanmar.” “Aw, that’s bad. Anyway, I’ll just create a Threads account I guess, my mom is sharing my niece’s baby pictures.”