My quick reaction on #Threads after one day -
No shocker - I hate the way it incorporates with the #fediverse as a whole and, at least currently, feels like it's working in (ish) bad faith.. that may change, but for now they are simply using us as potential eyeballs to boost their engagement numbers (esp for their "big accounts")
BUT...
From my experience, it beats the absolute pants off of #BlueSky in terms of actual "topic" interaction
Your miles may vary...