It's been going on at least since electing Ronald Reagan president in 1980.
And it's not just the USA, see Ukrainian President Zelenskyy, whose resumé previous to being elected president consisted of being a politically relevant comedian.
And it's not just the USA, see Ukrainian President Zelenskyy, whose resumé previous to being elected president consisted of being a politically relevant comedian.
I saw someone make an argument that the rise of celebrity politicians is about television. See also JFK, kind of one of the first "celebrity" politicians in the age of TV -- not that he was an actor first, but still.
The senile Joe Biden?