This might not be a popular opinion,
It is a popular opinion on this forum, and appears to be a largely popular opinion outside of it as well.
but I think most people who get into lots of scrapes and who post lots of videos of their scrapes to the Internet are cycling poorly (which is a big part of why they get into so many scrapes in the first place), but they think they're cycling well (which is why they post the videos).
In almost every video I see where the cyclist thinks a driver is 100% to blame, the cyclist is contributing in some way to the problem, whether it's just incorrect lane positioning or something else.
There does seem to be a lot of interesting opinions as to what constitutes poor cycling on this forum, and what constitutes contributing to a problem.
I think it is very useful to behave in certain ways to minimise on incidents - good positioning, looking back etc, all can contribute towards preventing a motorist performing a dangerous or illegal maneuver. But when people actually apportion blame upon the cyclist for not doing such things to potentially prevent the incident occuring - I have a real problem with that. It is still entirely the fault of the motorist who performed the dangerous/illegal maneuver - the nasty close pass, pulling out etc - because
they did it.
Apportioning blame upon the cyclist when their behaviour was entirely within the rules is straight up victim blaming. Excuse the hyperbole but it smacks of telling someone off for walking down a dark alley at night and getting mugged, or a girl wearing a short skirt and getting ... well you get the idea. Just because the victim could have altered their behaviour to
possibly prevent an incident, does not mean any responsibility is taken away from the perpetrator.
I once considered attaching a camera to the bike (but I didn't) and I bought an Airzound horn - all because I was going through a phase of fearing cars, but after three months of not using it I decided to dump it.
If you're relatively careful on the road, I tend to think you won't get into enough scrapes to warrant attaching a camera or using a horn..
I dropped the horn because it doesn't suit the aesthetics of my current commuter, and people don't use cameras just to capture errant road users.