I want to believe RFK is a good guy, but my gut feeling (beyond the fact that real good guys can't exist at that level, even if you're born into prominence) is this:

His role is to create a testing and validation framework for vaccines that people will then accept. And then, if you've been paying attention, you've got Del Bigtree/ICAN working to get these laws passed in every state that no vaccines can be mandatory unless they have been adequately tested. Put the two together and that's how you move the anti-vax crew back into accepting mandates.