I can't see why a pushie rider could ever blame a car/truck/4WD driver for them having a stack.
Its always the bike riders fault and I can show you why.
When a pushbike is ridden, very seldom, will the rider keep a straight line like a car will.
When a car applies power, the car stays along the same line, just quicker over ground.
When a push bike speeds up, the bike wobbles from side to side as the extra power is applied.
When a push rider really guns it to say ride up a hill, they stand up on the peddles and really get the ol side to side hip swinging shimmy shimmy action going.
The poor car driver, is now swerving all over the place to maintain a safe 1 metre distance as they drive past a group of lycra lads.
That's the reason why sometimes they get bumped off.
Now, just to prove my point, lets take all the vehicle off the road except push bikes.
The "Tour De France" is a good example.......
The push bike riders, now start to crash into each other.... don't they.
I bet the first thing they do when they get their gravel rashed butt off the bitumen is look for the offending car.
Why don't push bike riders demand the one metre rule in this case?
There'd be less stacks, no elbowing other riders and they should be very happy.
I say its discrimination. (Spelling?)
I watched the Noosa Tri once, and I felt so happy to see the pushbike riders leaving Noosa, only to be very disappointed when they turned around and rode back in again.