I'm of the mind that it's up to every individual to decide how much risk they want to take, but I think an e-bike that can do 55 mph is significantly more dangerous than a motorcycle. Tiny amount of traction, no ability to maneuver or speed up further to get yourself out of a dangerous position. Crude/no suspension. No traction control, no turn signals, silent. Cars on the road see a pedal bike and expect you to behave like one. Rider unlikely to be wearing the correct safety gear. If you lay down a bike at 55 and you aren't wearing leathers you can literally bleed out right there on the pavement. The list goes on and on.

Again, not saying it should not be allowed, but man, at that point please just take care of yourself and get a little honda motorbike and a full face helmet/leathers.