The Ratpoison on Mythbuntu page does not exist to explain the purpose of Ratpoison. That's what the Ratpoison page is for, which not coincidentally is linked to in the very first word of the page in question. The page exists to explain how to install Ratpoison on Mythbuntu systems, replacing the default XFCE that Mythbuntu uses for similar reasons.
Your interpretation of what Ratpoison is was completely wrong. It is not a mouse controller. It wants nothing to do with the mouse, hence its name. It is a lightweight, unadorned window manager, with limited external dependencies, controllable entirely from keyboard shortcuts. I'm not sure how you came up with the belief that the author of that page is also the primary developer of Ratpoison, but further investigation of the Ratpoison authors list shows that to not be the case, besides that fact being irrelevant were it true anyway.
Even if all that I understood about the page is wrong, it would be easier, obviously for a non technically experience person, such as myself, to be told what the purpose of a thing is, on the pages that thing exists on. Why is this wrong? What benefit to going from the first page I came to, due to Myth wiki page hyperlinks to find that the page does not describe what the thing is for?
As for my misunderstanding both the author as well as having no idea of how to determine the author, well it's the underlying talk page, not the public view.