#Threads will not interact or be otherwise integrated with #ActivityPub for some while
"“Soon, you’ll be able to follow and interact with people on other fediverse platforms, such as #Mastodon. They can also find people on Threads using full usernames, such as @mosseri.”"
Note: "soon"
A whole hell of a lot of people got this all wrong, mostly because it's a hot dopamine fix to push the idea and get tons of Boosts on it