Jeez. The merits i guess are there for a lawsuit for false endorsement just like celebrities sue scammers that say they endorse scam products e.g. https://www.nytimes.com/2019/11/06/business/media/sandra-bul...

Just it's funny and the lawsuit would be funny, and I don't really believe there's a meaningful number of people subscribing for twitter blue because these celebrities "did." Certainly not enough to react as you are and believe this is massive fraud.