His word choice about semicolons is problematic for other reasons, so I won't quote it here, but Vonnegut made his views on punctuation and story structure very known. An internet search will provide it to you readily. And anybody who's read his works is familiar with his love of the em dash.
But more to his -- and my -- point: He also regularly encouraged people to flout rules and standards. His famous quote about semicolons, when read in its original context, is followed by a sentence with a semicolon!
He was a subversive author who abhorred mindless compliance and begged us to remain inquisitive. Subversion of accepted standards lies at the heart of all creativity. And as creative works enter the broader discourse, they themselves shape new standards. It's why our languages are always changing.
Your point about Citizen Kane and Independence Day 2 is nonsensical, and presumes we all have the same goals when consuming entertainment. I'm not going to engage in that argument.
