I have both a helmet mount and a pole mount, and have used both at different times. For me it's a training thing. I don't do "edits", I just watch the original uncut vid. It was through watching my first pole-mount video that I realized how little edge i was using, for instance. Since then, been working on getting the angles up on my board.
And the videos help a little in the off-season with withdrawal.
As for the point about people who are waving their poles around obliviously, I'd bet they're pretty oblivious even when they aren't carrying hardware.
Coffee is your friend. Everyone else is an acquaintance.