Things cyclists should know … POV driver who's incapable of cycling

It seems to me that a fair amount of cyclists don't drive at all, and I think have never considered cycling from a driver's perspective.

You would be wrong. 90% of cyclists also drive - this is proportionally greater than the general population.

You make some good points but, as a driver who doesn't cycle, fail to understand why cyclists often do the things they do that test your patience.

There's a lot in your post that is incorrect, has already been refuted by scientific studies and is already covered in the highway code and good publications such as Cyclecraft and City Cycling. Perhaps you should familiarise yourself with these - it's possible you might gain a better understanding of cyclist/cycling.

I do agree with your thoughts on the driving test though.