Imo reports of the death of threads are more hype and sensationalism. “Threads is booming” was a good tech headline, “Threads is dying” was a good tech headline. It would be perfectly expected for a ton of people to check it out at first and then use it if they want, or not. It reminds me of how in the lame city I lived in Olive Garden opened and was reservation-only for 4 months. Just because they didn’t stay reservation only doesn’t mean their launch or normal business was unsuccessful. Meta has a huge advantage in using the IG account base.
Personally, I haven’t been on FB in years, only go to IG to message people, and the content there is good for one account I have and so awful for another one. I have no interest in another meta product but what has stopped me from even looking at it is the lack of a full web interface. I will not install their app. 95% of people don’t care about that, though.