I know he says he won't but, I still would not be surprised in the least if he becomes Trump's running mate.
For Trump it seems to work...
1. Avid anti vaxxer where Trump isn't and more importantly, wants his credit for the COVID vax.
2. Kennedy is supposedly a Dem and could possibly pull some Dem votes from his name. Plus he can also spin it as apolitical, bucking the two party forced choice as a spin. He's uniting!!!
3. Huge q-anon crowd support which overlaps Trump support.
4. No governing experience, so he's not 'part of the swamp, the establishment, etc'.
5. Again, name recognition and celebrity recognition. Trump seems to be infatuated with celebrity but not a serious threat to challenge Trump's core like a Desantis or an actual politician.
I'm sure there's more. Kennedy said he's not interested but we're in primary season and he needs to keep up the impression that he's a serious dem candidate.
We'll see.