He was a favorite in the 1988 presidential primary because he was such a a great public speaker
Were you alive back then? As I remember it, he was a perennial also-ran because he couldn’t help but stay stupid shit now and then. It’s as if the word “Gaffe” in politics was invented to describe stupid things Joe Biden said. And saying stuff like that stopped campaigns cold back then. (remember when Howard Dean’s campaign got killed over screaming the wrong way?)
But then Trump happened, and all of a sudden saying stupid shit all the time was no longer a liability.