<button>DO YOU KNOW WHO I AM?</button>
Personally I'd like a Foghat option:
<button>Slow ride, take it easy.</button>
It can be a real pleasure to enjoy a buttery-smooth ride, and robots will excel at it. And of course manufacturers will optimize for it since it demonstrates confidence and safety. OTOH, you know what can also be fun? Having a Tesla kick your butt with almost 1 G.
There should be a reasonably-smooth default setting, a "show me your skills" super-smooth setting, a "sporty" setting, and "madman". The latter would probably cost extra due to the extra wear and tear, and I'm sure I'd pay for it, at least once, for the experience.
But yes, it's technically "illegal", just like a rolling stop. Which prods the question of why one is subject to regulatory oversight and the other is not.
Because one is a safety issue when done, and one is a safety issue when not done. Not obeying the speed limit is (mostly) safe when matching the traffic around you. Not stopping fully at a stop sign is unsafe since it can lead to accidents regardless of what everyone else around you does.
Or to flip it around... obeying the speed limit but not matching the traffic around you is generally unsafe. While obeying the stop sign and stopping fully is always safe.
Same with rolling stop in fsd, it's even more clearly a decision by the car which would naturally fall under self driving regulation while decisions by the driver naturally wouldn't. I.e. this isn't a "perform rolling stops" button the driver pressed to force the decision.