It's a complete puzzle to me as well as to why they didn't integrate a 4th regen level incorporating full one-pedal stop and hold capability. Perhaps someone in SW engineering got confused between "pedal" and "paddle". It's interesting to me that the left-paddle-hold function uses resolver-based servo positioning to maintain a stop while the Auto Hold function actually uses the disk brakes. I would subsequently expect that slightly more battery power is used while holding the motor in position than if it can relax at zero torque with brakes on. If you play around with the former on gradients you'll note the deadband. It fails to work in reverse as well but no-doubt that's for safety as you continue driving.