Plenty of people don't like photos/videos at all, I suspect this is just a continuation of this trend. I like having photos and vid of me and my mates so that 12 months down the line I can remember a fun day while flicking through the files. Very few people are actually hoping to make a professional looking video, or take heart-stopping photos, but people like to keep a record of what they've done and who with, and memories of fun times.
I think the helmet vids are probably the funniest. I imagine most people get one and then realise they're crap and then sell them on.
I quite like my helmet cam vids (when properly mounted!) there's nothing crap about them, they provide entertainment without the pretence of being a pro level video. Though I do struggle to find the time to edit together a few gigs of video, it's something to do on a quiet night with a beer and the TV.
By god, this thread really does show who the miserable gits are, doesn't it?!