Yep, provided they keep the same payouts which I have doubts considering I've seen some blue checks that are just shitposters getting $50-80/month. No way that is sustainable.
IMO, people will not leave Twitter for an alternative until the important figureheads for their favorite topics are here. Sports, for example. My suggestion is building something akin to a Hootsuite where you can post to Twitter and Nostr simultaneously.