> I've found that most larger GNU projects have pretty horrible man pages. Probably due to feature creep in said projects - so the manuals have to be large to cover all the features.
Rather, info manuals are GNU's official (self-invented I think) documentation system. They make manpages only because of their popularity, but they direct you to the info pages for more info. When other projects have too much documentation for a manpage, they split it among several pages, like perl, openssl, zsh, git, borg, btrfs, etc. Personally, I like both, and wouldn't rank one above the other.
I spent 10 years avoiding awk, because every time I typed 'man awk' I was overwhelmed by the GNU monstrosity. Then I found the man page for the plan9 implementation of awk (http://man.cat-v.org/plan_9/1/awk) and learned the language in fifteen minutes.