What you said is true of perhaps the majority of Bernie supporters...it is not true of all. I never said most, or a lot....only some.
I know some (can’t believe they’re into Bernie, but they are ) - and they also like Trump. They like the outsider mentality. They like raging against the system, even as they cannot define the system.
I can’t imagine more than the barest handful of them going to the dark side so extremely. I’ll give you ‘some’ but with the qualifier that it’s a damn small figure.