Facebook is well known for using bait-and-switch tactics once they grow past a certain size. They've burned bridge after bridge over multiple years on their existing platforms, increasingly making it difficult for people to reach their audience unless they pay up for ads.

During the initial release, Threads seemed like a sanitized corporate playground for various big-name organizations to share their slop and promotions. Right now I get a lot of anti-Elon / anti-Twitter slop or political slop despite never engaging with such content. Most of the famous people I follow on Threads are just cross-posting the same content on every major social media platform anyway. I barely know anyone from real life that actually participates on Threads. In general, the tools for discovering interesting or new people don't seem to be there for Threads.

Finally, this current version of Threads is probably the best it's ever going to be. Once enough people are using the platform Zuck is going to start shoving ads down your throat, just like they've done with Instagram.

Edit: Instagram also keeps giving me notifications when certain people make posts on Threads, to try and get me to use the platform more often. And even Threads will randomly send me a notification that Yann LeCun made some post on Threads which it thinks I will really love, despite it being incredibly generic and uninteresting.