Comment by DougMerritt

Which is unfortunate, because the majority are either extremely terse, and/or merely consist of installation instructions, so that the information content is nowhere near as high as an average man page.

At least in my experience; maybe I've just been repeatedly unlucky.

I doubt it, though, because there isn't any standard template for them, unlike the situation for man pages, which have a number of standard sections that people generally copy.