Trump may flirt with anti-vaxx sentiment or climate denial, etc., but he can’t fully support those ideas. They’re very niche and he’d lose the centre if he did.
RFK Jr doesn’t hold back on those issues. For conspiracy types he is closer to their beliefs than Trump.
People say humans firing lightning bolts out of their hands is a long way off, but look at the progress we’ve made on lasers in the last few decades. I reckon we’re 5 years away, and we should be enacting laws to stop someone doing a Palpatine.