That was my comment on the site developer.
You're absolutely right: each published a plugin must be sufficiently documented to use his novice.
The root problem is that for most authors to write plugins - a hobby, to whom they give their personal time (which is never enough), and the motivation to write the documentation does not exist.
I could not unequivocally and categorically answer the question, what is worse: the lack of the necessary plug-in free access, or availability, but undocumented.
