@jdp23 I am not sure where you are getting your info from, as #Instagram employees via leaks for weeks have made it clear that #Threads will communicate with #Mastodon, as well as other #ActivityPub apps.
Virtually every leak I have read implies Threads will be able to communicate with the #Fediverse. But I guess we will find out this month when it launches (I wonder if it will launch this week‽ Or maybe today‽)