We absolutely need some rules and laws regarding E bike operation. I was walking home the other day, and a kid came from behind that Knee bike and hit me with his handlebar going perhaps 15 miles an hour. I was lucky it wasn't worse. That's just plain carelessness and poor education. He had 3/4 of the sidewalk to easily maneuver around me and yet chose to cut close to me.
I'm an avid e-biker as well as a non-E biker and I see no reason why we can't respect each other's life and property when we operate them. We do need some rules and enforcement. It's just a matter of time.