Like I said, they don't do secret stuff. People associate shame with having done something bad, and their in-the-open shamelessness is what breaks people's mental models of how to evaluate them.
There's a difference. I have a hard time thinking of anyone (other than Bernie) on the left who has followers in the same way as Trump or Elon. It's a very new (yet not new at all) type of cult of personality.
And what sort of secret stuff has Trump or Elon done that hasn't been covered 100x by the media?