Sounds like a fair request. Perhaps someone should send them an email to let them know.
That being said, you put a finger on the main issue most security and privacy tool have: user friendliness.
Remember Sony, a 60 billion dollar company, completely fubared the DRM on the Playstation 2 because a developer didn't understand what an IV is. And you go through the OpenSSL docs and it will tell you where to supply your IV without ever explaining what it is. All it needs is a single paragraph explaining the best practices, probably 5 or 10 lines in the manual.
That was the first thing I looked for, and it took me a while to realize that the links "libcrypto", "libssl", etc on the main page were links to the documentation for each command. In fact, the only reason I found them was the fact that your post said "It _is_ linked to in their front page.", so I went back to find them.
Yeah, if I'd needed it right now, I would have figured it out eventually, but I think making it a bit more explicit (for lack of a better term) would be a good thing.
So they don't have to search, just read and click on links until they hit one that looks like a man page.