Mick,
Your assertion that the cyclist must keep left is not completely accurate in the context which you post.
I do not profess to know all the road rules of all the states however I believe that all vehicles must keep left as far as practicable (paraphrased).
This does not mean that any vehicle must keep left in a lane so that there is sufficient space for another vehicle to pass the first vehicle in the same lane.
Comments such as "You'll also notice that the cyclist was not keeping left as is required by law" amounts to a justification of the behaviour of the motorist, in the context of your post.
In my view it also promotes the misconception that any vehicle that is not a motor vehicle may be treated / viewed as less worthy of our due care / compassion / respect..........or whatever the correct term is.
I think the focus should remain firmly on the actions of the motorist in this particular case.

