On the being banned from a forum thing.
I don't believe this applies to this individual case or the forum under question, but it's an "other side" view.
I've belonged to several "advanced topic" forums where new/low level questions get a person outright banned. The people in the forum are actively trying to keep new members out, and maintain a minimum level of discourse on the forum. And it works very well. Most technical forums see a regular "change of the guard" as old, experienced veterans get tired of answering the same question a hundred times.
In the couple forums I've belonged to where new members are actively screened and kept out, you can (not always, but can) get an amazing trove of advanced knowledge. Industry professionals and very recognizeable figures in whatever field stay around, and are very active. To the right kind of person, those forums are very well worth the time and effort necessary to be allowed to start threads and ask questions.
To draw a direct analogy to photography: It would be like having a forum ful of professional lens designers, with immediately recognizable names in photography, combined with some of the folks who write the image processors for dSLR's.
It's a rare thing to pull of, and usually the forum winds up being full of retards (as in this case). But when it works, it's an amazing resource for very advanced people.