Also the people he is trying to get through to are on Twitter.

This is the fallacy. Twitter is not a forum, it is an algorithmic attention optimizing feed. It literally will not show people things they don’t want to see, because that’s bad for engagement. With Musk in charge, this’d be like showing up to a debate hosted, moderated, run, and censored by an authoritarian party; all Bernie’s doing is validating opponents.

The only move is to step away, aka:

Don’t feed the trolls.