An interesting point by David Crossland in some after-hour conversation: GNU Info might seem crufty now, but when it came out, it was hot stuff. Remember that the web didn't exist yet in the 80s, so having a hypertext documentation system was awesome.
@cwebber GNU info > man pages
@cwebber I recall it pre-web and not with any fondness. I invariably wished for just a man page because navigation was so painful and tied to a particular editor and its learning curve.