Then clearly you need to get a car with better proximity detection systems. That's easily the simplest collision to detect and avoid for any automated system.
I know that sounds glib, but you need to recognize that if your ability to drive safely is so dependent on the "expected" behavior of other drivers, that maybe driving the way you are (which is to say, in the state of being a human) is the wrong way to solve the problem.
> I do believe that they likely increase the risk of minor collisions.
Pretty sure to the extent that this has been studied, exactly the opposite is true. For every "annoyance glitch" you posit, these things are saving 6-7 "loss of attention" fender benders.