The discourse in the last few days regarding #Meta and #Threads gives the impression that the entire Fediverse is already blocking Threads. I wanted to take a look at the numbers and they speak a different language. The data source for my calculation is https://fedipact.veganism.social/?v=2.
Measured by user count, 76 % of all users are federated with Threads. Remaining instances with 24 % of users either block Threads or are limited (e.g. infosec.exchange).