The only thing the clutch is good for is to get the tires loose with a clutch kick or to detach the engine drag from the wheels if one so desired.
Dunno how much drag the motor would create if allowed to spin freely…
Though a clutch-kick in an ICE operates based on the inertia of the rotating engine. I wonder how much inertia an electric motor has and if a clutch-kick would even be as effective.
What they really need is a hydraulic parking brake lever. Being able to lock the rear tires is a necessity for drifting situations when you want to increase angle while also scrubbing speed.