In England there are lots of shared pedestrian and cycle paths where people run ebikes with their speed regulators removed at up to 50 mph. As a pedestrian, I've had to jump out of the way more than once, and was sorely tempted to take down one rider who got dangerously close on a narrow trail, despite having ample room to go around if he'd wanted to.
"Not as dangerous as a car" can still be plenty fucking dangerous. The problem with this proposed legislation is that, in practice, it's not going to change much, since police are not patrolling any of the places where these problems occur. So in effect, it's little more than a statement of principle. Better to assign strict liability in any pedestrian/motorised vehicle collision to the driver of the vehicle, unless there's strong exculpatory evidence.