This dynamic carries into Threads, where Meta AI slop is aggressively pushed in the feed.
There's also a significant amount of viral content that is clearly an older person's Facebook post which was intended for only friends but got pushed to the public feed of a Threads account that may have been created by accident -- or default -- when Facebook blitz-scaled user numbers after launch. The posts are always hundreds of people piling on about someone posting a photo of their teenager in an embarrassing situation, with the original poster probably blissfully unaware that they're getting publicly dragged on Threads.
Check your parents' phones to see if they're publicly cross-posting on accident!