Old school crazy was more original than modern crazy. Pre internet unless you worked with crazy professionally, you wouldn't meet that much of it. When it came time you had to roll your own.
Modern crazy is a little smoother. Less of a gap, crazy moment to crazy moment, it's all influenced by other easily accessible crazy. "I've seen *that* crazy before!"
And you have. They borrowed it rather than workshopping it as far from humans as they could get: mass produced crazy, rather than artisanal.