It sounds like we’ve had drastically different experiences.

I’m saying they are better than fine, and a great technology for mobility as an alternative to cars for single riders, and if paired with other methods of transport (busses, light rail) they’re a fantastic last mile solution.

I’ve personally nearly been run over by bike riders going way too fast on the streets of Amsterdam, I doubt the extra 20lbs of a battery would have made a difference in the danger there. Lack of education, personal responsibility, and enforcement doesn’t equate to a wonderful technology being discouraged for those who would most be positively impacted, and I personally think they’re a fantastic way to encourage a decline in the number of cars in the road in urban environments.

Your points aren’t invalid, and I agree a self centered asshole zooming around at 25mph is an issue in a crowded sidewalk, but I think that speaks more of our current post-covid society of selfishness than the technology itself.