Adam Mosseri:
Second, threads posted by me and a few members of the Threads team will be available on other fediverse platforms like Mastodon starting this week. This test is a small but meaningful step towards making Threads interoperable with other apps using ActivityPub — we’re committed to doing this so that people can find community and engage with the content most relevant to them, no matter what app they use.
This was the first comment on this post that made me feel like I wasn’t taking crazy pills. I agree completely. I still don’t see how Threads joining ActivityPub is a bad thing for us, unless it convinces a large number of people to migrate to Threads from their current instance.