All major parties in America are right wing. So he's fascist/authoritarian friendly 100%.

There's no mechanism to throw him out of the party. Party membership in the US is completely informal, unlike many other countries. You're basically a member if you say you are and there's nothing anyone can do about it.

Because the party is run by idiots

There's not going to be a primary, so it doesn't matter.

A ton of people will just see the name Kennedy and do it out of reflex. Not that even President Kennedy was a great guy. Had he gotten to serve out his whole term and possibly a second one I think he would be remembered much differently than he is now. Most of his likely scandals never came to fruition because it would be pointless trying to smear a corpse that was no longer in your way.

But a ton of low information on educated reactionary voters will see Kennedy, as not what your country can do for you etc and pull the lever thinking surely he couldn't be any worse than Biden. All the misinformation they've heard about Biden he's horrible of course right? They would do it in a heartbeat.

There is a very large anti vaxx community among leftists, unfortunately.

Heh yea it was a pathetic attempt. It’s pretty obvious it won’t go anywhere.