I'm a motorcyclist, so probably in a pretty good position to shed some light on this.
Motorcyclists, for the most part, do not do 150mph on the motorway. Althought the bikes are most certainly capable (mine will do 70mph in 2nd gear for example), it's just not very doable. TT riders sure, but the average Joe? No.
We undertake training, in particular I've trained with the police, Rospa and IAM in a bid to make myself safe on the road and to ensure that other road users actually see me.
Most bikers wear decent gear, Kevlar top to bottom, decent helmet, all the gear, all the time.
Even when it's hot weather and we're basically sat on a combustion engine, we wear the correct gear.
It may appear that we're 'whizzing around bends', but in reality, we'll take the bend at the speed of the road, it probably looks faster because we have to lean, it's basic physics really. And of course we lean, if we didn't, we'd end up in a field somewhere, or somebody's front garden.
We filter. Of course we do, we're allowed, in slow moving or static traffic.
A lot of accidents are, sure, down to rider error.
The rider overcooking it on a bend and ending up wrapped around a lamppost, the rider who was going too fast and didn't see that the traffic had slowed,.
But an equal number of accidents are down to car drivers not actually seeing us.
We're actually taught to weave on the road when we're approching a junction, to enable the car driver to see the moving light and not pull out.
More education needs to happen on both sides.
Motorcyclists undertake more further training than any other road users, and can do so at any time, thanks to proactive behaviour from the road safety organisations and police forces. We have a good understanding of the highway code, and ride accordingly.
It would be great if car drivers could do the same.
And finally, for transparency, I'm also a car driver.