Based on funding sources alone, it’s clear RFKjr is a cutout puppet for MAGA interests to split the Dem vote.
Regardless, his anti-vaxx and pro-virus message is irrational, illogical, and downright dangerous. Rolling Stone has a disturbing feature on RFKjr and his many anti-science views.
The Green Party hasn’t even succeeded in having a candidate elected to the U.S. House of Representatives — they show up for presidential elections, and that’s about it. They don’t do much work in the “off-season.” A vote for the presidential candidate of the Green Party at this point is a protest vote. The Republican Party is an existential threat to many groups of people; a protest vote in light of that threat is simply inaction in the face of having the privilege to not be targeted, and it only helps the oppressor.