Yes. People driving kill thousands of pedestrians every year.

People act like “but cars kill more people!” is an argument in favor of whatever dangerous thing they’re talking about, not an argument against the way cars and roads are designed and operated.

I agree, FWIW.

In many cases yes. E.g. drivers who use residential streets as through streets are certainly obnoxious.

I don't think you can accurately make simple analogies like this. What is discussed here is more like what speed you should be going if you driving path intersects a pedestrian's path (possibly in a crosswalk). Then there is a difference between someone stopping and seeing the pedestrian is very far away and turning right vs. someone doing a 45 mph and driving within a few feet of a pedestrian. Different drivers and pedestrians will have different expectations.

No, it's all degrees of risk.

The only accurate way is to quantify the risk, rather than blindly assert "extremely obnoxious behavior".