I'm going to reiterate what a few have already said, in the naive hope that it might sink in.
You should not judge cyclists that use helmet cams purely on those that upload their footage to YouTube.
I bought one because I was driven into on purpose, and it shook me up. When I posted about it on here, some people again said that I'd soon be looking for arguments and posting silly bits of footage. I should not bother and get on with enjoying my cycling, they said.
Well you know what? None of it happened. I have uploaded two videos in 6 months. One is a truck that came within inches of my pedal, and another is of me falling off, which was posted because it's funny.
It hasn't changed my riding style, it hasn't made me look for incidents, and I haven't suddenly got the urge to trawl through footage looking to entertain my YouTube channel.
And I bet there's plenty out there just like me.