The same can certainly be said of the CPAN library.   I think that the Ruby community is every bit as good as the Perl community on this score, and of course, there are some folks who are active contributors in both.   Technical prowess is really not a point-of-issue here.   Documentation is very often better when it is contributed by someone other than the author(s), because it better reflects the POV of the user ... something that is much harder for authors to see because they have been so immersed in the problem by virtue of building (and then, publishing) a solution for it.