I can remember when my Facebook feed was full of travel and baby pictures (not to mention much earlier days when it was how you got invited to parties) Now when I log in, the feed is full of slop, with maybe one actual update from someone I last saw in high school 20 years ago. That's not just because they're filling the feed with slop for the sake of it. If I navigate to a friend's profile their most recent updates are probably their last three birthdays, each with generic greetings offered by 3-5 people presumably not close enough to have their phone number. My last few friend requests are all bots. I'm sure people still habitually click the app and scroll for a few moments, and also sure it might be different for communities in India or Brazil but yeah... it really isn't what it used to be for regular people who heavily used it for at least a decade and couldn't care less about privacy concerns or Zuck's politics. It's gone from social network to third rate clickbait feed which happens to be a default app on more phones than the better ones...
As for Threads, there was something about the way they tried to entice signups with the world's dullest clickbait that just didn't induce me to see if anyone actually used it for stuff.