info (i.e. TexInfo) is great, but back in the 90s, there was a push in the GNU world to move from man pages to info entirely. Annoyingly, during that time lots of GNU man pages would tell you to look at its info pages instead.
Me, and apparently others, were not thrilled. While info is technically superior, the "one page" format of a man page, at least to me, felt quicker and more convenient for quickly looking up something than info's hypertext. info might be better for dedicated reading of documentation (and I like using it in emacs for that), but perceived as less so when you quickly, say, want to look up a flag for ls.
This might be for complicated human reasons or even just habit... e.g. you can still do full text search in info pages across all subpages, both with the "info" command and in emacs' info mode: just hit the 's' key.
I'm not sure what the state today is, I can't remember when I was last pointed to info instead of man (and I think I dimly remember some announcement that this would stop). But I also largely moved more towards BSD derivates rather than Linux, so I can't be sure.
You can search and navigate with info very efficiently. In your case searching for 'flags' should quickly show the relevant info.
On the other hand, especially for man pages that are not huge, you can get a good grasp and overview by just scrolling linearly through the man page. At least for me, who tends to think very visually, I then have the impression I got a better feeling for the structure and covered content of the document than if it was hierarchical. (Again, this breaks down once the document gets too large.)
Overall, that annoyed "oh gosh, I just wanted a quick scroll through the man page" feeling when encountering a man page that was just a stub for the info document probably comes from somewhere after all.
Maybe they are a better experience locally, but I never bothered to find out.
The patological fear that it appeared the info system had of ever producing a webpage with 200kb+ text on it, that I can search for and click links without delay essentially ruined the experience for me. Who cares if the download would take 5 seconds, when I would spend 20 minutes reading through it?
Yeah..
On the other side, "info cp" didn't bring up the _reference_ of cp for a frickin' loooong time. It was a usability nightmare for that reason, and that reason alone. Had it worked the way it's working now: bringing you to the command reference first, but allow to search the entire manual scope at once (and WORKING references!), I would have been SOLD from the first moment.
The fixed-width format is the last thing I wished would be removed. I disabled catpath and have full-width manpages, but I cannot do the same with info as the text is pre-formatted.
(EDIT: it's 4.4MB instead of 200KB though)
It's ancient (Emacs had hypertext way before the Web existed), but, for some purposes, it can be much more efficient than anything in a Web browser.