Obviously, the Tesla FSD Autopilot made a big mistake, but didn't the driver react? If my car slows from 40 to 0 MPH in 5 Seconds, and there is no obstacle in f

Obviously, the Tesla FSD Autopilot made a big mistake, but didn't the driver react? If my car slows from 40 to 0 MPH in 5 Seconds, and there is no obstacle in front of me, I must assuredly would step on the accelerator. Not that FSD Autopilot is what it's marketed as, but this is the responsibility of the driver and not the car.