Why bother? He's a non-entity who is just going to start a guru cult after this campaign ruins his reputation. At best he'll get 1% of the vote. There's no point in anyone from any ideology targeting him for any reason.
Even then who would that impress? JFK and his father were important sure, but an accelerationist goober like the Trump one seems to be would cause zero reaction. Not in me, MAGA cultists, liberals- it'd be a day of civility fetishism and jokes about the rule of 3s. If someone is just targeting the family name, surely there are more meaningful Kennedys out there. He's a presidential candidate in the same way any meme candidate is.
And low enough standards for RFK Jr to count? It'd be so underwhelming if there's no mystique to it. Like saying you'll cook a romantic dinner for your partner and then giving them a piece of white bread. Technically it's food but I'd expect to be dumped for it.