As a clutch enthusiast, I would welcome this innovation if it actually improved EV motor performance. If its only purpose is to simulate the ICE experience, I'm not interested.
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.
There's little downside to active power control unless you want the effect of not having it.
Side note to locking and viscous differentials (and for automatic transmissions, the "slushbox" torque converter), which have been providing passive traction control in cars for 70 years.