The thing is—GNU is right here, that info is better. You can run info from the command-line just like man, except info pages are hierarchical, indexed, and have links. The same sources can then be used to generate web pages. You then have one set of docs you update, which are accessible both from the web and from the terminal. The system can handle large projects and it’s easy to navigate—much easier than man. It’s beautiful.
Man, by comparison, gives you individual pages. I think that’s great when you need to stare at the docs for an individual API call for a while, like when you read “man mmap” or something, but it sucks for large projects. You can convert man pages to web pages but it’s not competitive with info.
Try running “info gcc” or “info make” at some point and you’ll see something beautiful. You can browse linearly using space/backspace, and Q to quit. You can do a text search across the whole manual, you can follow links, etc.
I find this system good enough that when it’s available, I don’t use the web browser to look up docs for stuff like GCC or Make.