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You can have coasting and regen braking with traditional two pedal driving. With Toyota's hybrids, for example, using the brake pedal engages regen and only engages the brake once you need more braking force than the regen can provide.

Converting kinetic energy back into something you can use later to accelerate is less efficient than dissipating it as heat you can never recover? I don't follow your math.

I’m not even sure what I meant. More sleep needed.

Edit: While coasting might be more efficient than braking, regen braking is probably more efficient than using brakes. (Which might explain the overall efficiency improvement when using one-pedal driving even if we assume coasting is more efficient than braking)

Depends on the car, mine (Polestar 2) uses regen braking regardless of whether one-pedal driving is selected. The consensus seems to be that coasting is slightly more efficient but barely enough to make a difference.

Then what would be the point of having it?