You're missing basic logic here. Your point was that unexpected behavior IS identical to unsafe behavior. That was was falsified by a counter example.
I never claimed that (inherently safer) driving maneuvers might never lead to wrong and harmful reactions from other drivers. But your example again supports my point:
You're expecting that other drivers might panic under certain circumstances. Expecting that DOES NOT render a solid panic into a anything like a "safe" operating mode. So to conclude:
Expected behaviour is not always safe. (We have to expect people to panic or to break without reason or not seeing and running that red light. Expected, but not safe)
Unexpected behaviour is not unsafe by itself. In a critical situation, we might expect a driver to break as a reflex, but a skilled driver (or autonomous car) could floor the gas pedal and evade an oncoming car preventing the accident.
Of course there is unexpected and unsafe stuff (like parking your car in the middle of the interstate, driving blindfolded or whatever stupid surprises our fellow drivers might come up with.)
But there is NO GENERAL CONNECTION between safety and expectation of certain situations. Correlation, yes.but remember: Correlation does not imply causation