The RFK Jr. confirmation hearings put that to rest. It was a total fluff show. He is the Democrat establishment's hope at re-birth. He will be their candidate for President in 4 years.
Any real confirmation hearing would have spent days covering RFK Jr's decades as a crack and heroin addict in detail.
I halfway expected him to drop out and be Hillary's running mate. He's been working with her for 30 years in different capacities. It must nor have polled well.