I think those that have trained in similar ways, will have similar ideas. Those that have not may not be as likely to. It's easy to know if someone trains a particular discipline, what's the point in asking someone to show clips?
I have nearly zero footage of myself doing martial arts, and I've been training and teaching for decades now. I just never thought about it. Then again, it's only been in the past decade that everyone had camera phones in their pockets. That would have made things a whole lot easier to film on the fly when I was younger and fighting more often.
"I don't know if anyone is known with the art of "sitting on your couch" here, but in my eyes it is also to be a martial art.
It is the art of avoiding dangerous situations. It helps you to avoid a dangerous situation by not actually being there. So lets say there is a dangerous situation going on somewhere other than your couch. You are safely seated on your couch so you have in a nutshell "difused" the situation."