Way to analyze a stressful situation, sitting from the comforts of your own home. A+++++
There are a number of situations where it isn't so cut and dry. Imagine getting ready to pass a car by squeezing into the lane on your left (you can give yourself a lot of room, if you'd like, or it can be a last minute decision). As you're checking your blind spot, your car suddenly accelerates. You quickly approach the car in front of you, putting you in tailgating position, and this driver coincidentally, at the same time, lightly touches his breaks (maybe he caught himself tailgating the guy in front of him, or was distracted.) What would most people do? I am pretty sure they'd go for the breaks as soon as they see those break lights flash. The fact that the car took off on its own would be an afterthought.
Not every scenario is as if you're cruising down a 1 lane highway with a 2 car following distance between every car with a 10 ft shoulder.
I don't disagree with you. Many people drive like crap. And many people are probably WRONG about their cars accelerating on their own. as you mention, there are perfectly simple ways to recover from such a car malfunction. But you can't trivialize a situation where your car has a mind of its own during the middle of a maneuver.