Not even this would be incredibly dangerous (pants caught on the chain? the motor won’t be stopping at all), but it would make it an illegal e-bike in much of the world since it doesn’t qualify as pedal assist, it’s now a flimsy motorcycle.
I would think the pedals would stay in the same position because of the back ratcheting. Think of when you're going down a hill and you hold your pedals still while accelerating down. I'm no bike expert though, I may be wrong haha.
For most bikes this ratcheting mechanism is in the back wheel, so when going down a hill the pedals, the chain ring, and the chain are all staying in the same position.
In the demo the chain ring and chain are moving under the motors power, but the pedals are remaining still.
Not even this would be incredibly dangerous (pants caught on the chain? the motor won’t be stopping at all), but it would make it an illegal e-bike in much of the world since it doesn’t qualify as pedal assist, it’s now a flimsy motorcycle.