Thanks for such a long, thoughtful, and non confrontational response.

>I think there will have to be a law that ebikes can not ride more than 9mph on the sidewalk. Or $75 minimum fine.

Who's going to enforce this? Especially when these motor vehicles do not have any license plate identifying them, not that that's even very effective on cars these days when all sorts of clever methods of obscuring the plate are available, and even simple ones like a smoked plastic cover do not get ticketed by law enforcement.

I wish there was an answer other than law enforcement personnel. But it seems that we live in an era of entitlement where everyone tries to get away with absolutely every single thing they can, and the fact that it affects other people negatively seems not to matter, everyone is the star of their own movie, and other people are just extras at best.