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…
It won't. People use Twitter because of its free speech rules and this is very unlikely to give the same degree of freedom to the "conservatives".
Perhaps a tiny minority of 1st Amendment weirdos in America, but outside of them nobody else cares. Normal people just want to follow Kim Kardashian.