Well, I don't have any problem distinguishing between "discussing the merits" of something, and "promoting" it. They are not mutually exclusive, but they are different.
Anyway, there is nothing to say you can't promote the rig. It just does not state that as its aim. It says something different, and, I think, for a reason.
Back to videos and discussions about about the rig. Jan Cz just sent an email with a link to a very interesting video, in the form of a broadcast interview panel discussion in which JRA member Kris Krzysztof Matuszewski expounds on the subject of junk rigs. I wish I could comment but I can't speak a word of Polish. Have a look here. Kris gives a presentation of slides and video clips. 
I guess this is the sort of good discussion we are talking about.

This is Kris' boat
Thanks to Jan for the link
[edit - after some fooling around I found how to get subtitles, in English. From what I could infer, it was an excellent presentation by Kris and also a great introduction to the JRA. Well done Kris.]