The boundary between a bicycle and a motorbike has completely dissapeared.
That boundary needs to be recovered, and then rules will make sense again, until then, any effort is futile.
I think it's pretty clear what is a bicycle. Bicycles don't have engines.
> The boundary between a bicycle and a motorbike has completely dissapeared.
Not really. The first motorbikes were bicycles with engines attached. Many current electric motorcycles are bicycles with electric motors attached.
If it has a throttle and does not require pedal assist, it is a motorcycle.