You’re not wrong. The FYP, at least for my unused account, is garbage tier. Hell, the latest phenomenon it has picked up on is meme pages used to advertise OnlyFans and gambling, and outright pornography and porn ads. Some of the worst human beings are on there spreading ideas about race theory. Responses to anything vaguely popular are filled with blue check marks either trying to make money with engagement bait, or clout chasing by reply spam.
But Twitter allows you to curate your graph with the Following tab way better. There are enough sub-communities and funny people for it to still work.
And all recommendation algorithms are vulnerable. Thread’s head honcho had to release a statement because the recommendation algorithm on Threads became awful over the holiday period. And they aggressively want you on the FYP!