I am not aware of any other brainwashing institution he has been involved with.
The fact is that his populism, just like Mamdani's, is extremely threatening to the fascist establishment. And yes, this fascism has been coming on for decades -- long before Trump came down the escalator. Trump has prioritized the corruption element of fascism, but he didn't invent the thing.
These people will spend any amount of money to try to shut down the things Platner is talking about, just as they tried with Mamdani. I ask everyone who has been bashing Platner (he is a Democrat, and this site has rules against bashing Democrats), if I had a budget of $10,000,000 to investigate the complete private lives of those bashing Platner, what would I turn up? Would I find things these folks wouldn't want to face? I know somebody could find all sorts of things to attack me, and they wouldn't have to work that hard.
These are the politics of destruction. We expect that from Republicans, but shame on anybody here joining in that smear campaign.