He @thominator
We are doing our best at documenting things as we go. Remember we are a small team and there are only so many hours in the day. We are working hard to put up documentation as we go while juggling all the other stuff we are working on.
I think considering Elements is only at v1, the documents are pretty good. As you said there are hundreds of video tutorials on YouTube, lots of text documents on Gitbook (you can use the AI search feature if you don’t want to trawl though the containers as you mentioned), and of course there is the forum here (which also has search and an AI helper bot). Usually if people search, they can find what they are looking for, and if not ask here on the forum and get an answer from a real person. 
But yes documentation is always evolving, always being updated, always being added to. It’s a living breathing thing. 
You mentioned a Scott Kelby who set up a Photoshop organization to help people with the intricacies of Photoshop. I remember back in the day people in the RW community did that as well (RapidWeaver Classroom, RapidWeaver Tutorials, lots of other community members offering free or paid help guides and lessons as a service to the community). Nothing is stopping anybody from doing that with Elements, if they have knowledge to share, that would be fantastic for the community. Your book for example is a perfect example of that and everybody here appreciates it! 