@edsu Not with Musk at its helm. Twitter is basically cooked already, and I imagine most of the Popular And Cool Kids who haven't already moved to bluesky are more or less about to do so, and most reasonable regular users will follow when/if sign-ups open up.
Twitter will putter around as a haven of crypto scams and nazis for a long time though, but I honestly think it's more likely they try to federate with AP than AT (and get immediately defederated by everyone but the nazis).