I think those are all good points except the last one. You do not want cops running down kids on bikes on a hunch that they or their bike aren’t compliant with something that can’t be accurately assessed from a distance. Good transportation requires a combination of education, infrastructure, and enforcement. In the case of kids using electric motorcycles I think a lot of the first thing with a healthy helping of the second thing are where the focus should be. Teach kids responsible use in school, maybe lower the learner permit age for electric motorcycles use, and get better facilities for non-motorized vehicles so kids don’t require a motor or engine to safely travel longer distances.