They know the man pages exist and they want to use them, but most are written to merely be consistent in format and not necessarily in content. The worst thing to omit is examples.
This is my experience with manpages, they're great if you sort of know what you need or want deep CLI options reference but often lack in recipes or examples.
Man pages are too long and technical for 70% of casual use when the answers are a Google away. Normal usage patterns don't involve using every option, and that's what man pages are focused on documenting.
I'm not sure why a video of a 60's TV show would be useful when you're trying to get an explanation of command line options for common posix commands. But you do you.
What users do nowadays is rely on alternatives such as https://tldr.inbrowser.app/