Why would I? React is just bad, the change from classes/function components to hooks abstraction was terrible but the current push to RSC made me quit 2 years ago with zero regrets. Life is great when you don't need to debug zillions of useless components re-render.
Dan Abramov isn't "the creator of React", he just became an evangelist for react ever since he got to the team at Facebook through his work on redux. He is pushing for RSC (as that's where react's future seems to be), but what makes you think he's pushing for Vercel?
I'm not the creator of React (that would be Jordan). I've also never taken any money from Vercel and I don't care about it. I do think RSC is an interesting technology and I like writing about it while I'm on my sabbatical.