Tried Threads for 48 hours and my verdict is, it's definitely what it was intended to be: text posts for Instagram. It’s probably good if you’re used to the IG algorithm, but for people from Twitter/Mastodon/BlueSky looking for the classic social media feel, it’s basically unusable.
Launching without a following feed seemed like an extremely weird call, given it's the easiest to design. I assumed the algorithm would pick up the slack, but it hasn't. It's near impossible to find posts from people you follow, reposts seem to just go into the void, and there's no text search.
Threads is ideal if what you want from social media is being blasted by generic content from celebrities, but if you're looking for community, it's not viable. I've basically spent 48h there just twiddling my thumbs waiting to be able to find posts from people I actually care about, meanwhile most of them have already got bored and left.