Man pages are written (ideally) as the authoritative reference on your system, where you can go to find information. That sort of thing needs to exist somewhere

Man pages are written (ideally) as the authoritative reference on your system, where you can go to find information. That sort of thing needs to exist somewhere, it has a clear use case. An ideal man page is concise, informative, and complete. Learning to read them is like learning to read scientific literature: a pain, but once you figure it out, you're at a higher level.