Waymo doesn't require a driver to supervise the car, they're supposedly running Level 4 cars. FSD requires continual supervision, you must be responsible and attentive at all times. How is this a reasonable comparison?
There's a big difference between "someone at central command can take over when the car signals" and "someone must watch the car constantly and take over when they see it do anything bad".
The disengagement events on recent videos of FSD are still the likes of "oops it almost turned into oncoming traffic" or "oops it almost ran into a pole", that's the sort of thing you have to catch before it happens, not after.