Yeah, how can this be a passive system? Is it activated by the natural weight transfer then?
A dead-stiff car would be very hard on it's tires in high speed turns btw, as it would be less predictable when you pass the point where the tires can't take it.
In general the better you make a tyre stick, the faster it eventually breaks away. So if they're engaging the whole surface width effectively it will pull more g and let go more suddenly, but that should also be good for wear.
Tho I have always found the front camber a mystery, because when they arrive at the corner only the inside of the surface is warm then they in effect stick the car on cold tyres. Red Bull were frying the inside edges at one point, so it does work tho...