I'm calling it now, this is going to hollow out twitter in extremely rapid fashion. I give twitter a couple of months once this launches, they'll do a Wile E Coyote where they walk off the cliff, followed by plummeting. Meta is going to grind the blue bird to a fine powder, not saying this as a Meta fan, just a casual observer. There's massive pent-up demand for an alternative, and so far Bluesky and Mastodon haven't…
You cannot move a 100k followers from twitter to thread. All the influential people HAVE to keep using twitter to serve their followers. Even if they build a following on thread, it will take years to build what they have on twitter.