@freemo it's the thing that happens to so many public figures... not to mention sitcom characters:

When a person can consistently get a crowd reaction with some superficial action, eventually they get lazy and just lean into that action instead of putting in the effort to have depth, which is harder.

Basically, these real life figures eventually give up and become the caricature that their fans want, just like a sitcom character where writers get lazy and just write them as one dimensional.