Stopped at the silent generation not having much slang. Never saw a film noir or read a Raymond Chandler book. They practically invented slang. And not “daddy o”.
I agree. This guy was paid to write this awful article? There was TONS of slang during the Silent Generation. He did not research his article well at all.
As far as I know Daddy-o was a term of derision teens aimed at adult males. It did not indicate that the teen thought the target “cool”. This article gets so much so wrong I smell AI.