You’re right. Under ‘auto driving’ prior to the Tesla, the natural thing was to cover the brake pedal. I too, find myself covering the throttle now.The ultrasonic sensor sounds are turned off, have to be, as otherwise they'd drive you made with all the beeping at low speeds. I obviously never use AP or TACC on these roads, but it would be very useful to be able to turn off all the sensors completely at times. Until such time as the sensing systems are as good as those I was born with, I'd rather not have the car constantly throwing up false alarms.
Apart from the irritation these cause, there's also the "cry wolf" issue. I pretty much automatically just accelerate every time I get an unwanted braking event, as that overrides it, and this reaction, to hit the accelerator when this happens, is becoming a reflex now. The snag is that there might be one of these events that's a real hazard, when I'm driving at speed on a wider road, and I may just accidentally cancel it because that's just what I do with all the many false alarms.