Strikes me as another regional problem. NYC is loaded with junk ebikes held together with spit and tape, owned by a poorly-paid underclass of worker who are just trying to get by as best they can, with cheaply rebuilt patchwork batteries, charged in horrifically unsafe conditions so they like to go boom and kill people.
So Cal is overrun by kids with parents who buy them the ebike they want with essentially no parenting, preparatory instruction or supervision, and so the streets have a disproportionate number of little rugrats hooning around like you'd expect kids would if given half a chance. I know back in the day every kid wanted a little minibike powered by a Briggs & Stratton. If we had all gotten one back then, lawnmowers would probably still need a 10-day waiting period with a DROS list and a background check.
Quite some generalization.
Just how much have you ridden in each region to have those observation to be considered as general occurrences?
I've been commuting on bicycles, motorcycles, scooters & e-bikes in NYC metro since 2013,
my observations are that delivery workers on e-bike actually take care of their e-bikes since their incomes depend on their vehicles being operational.
The beat up e-bikes are actually the ones used for bike shares used by tourists.
Batteries charged in unsafe conditions or 100+ year old wiring that's being utilized to supply electricity to modern electronics and appliances at or close to maximum capacity due to population density?
Battery explosion vs overheated wiring have very specific signs in fire scenes; make sure you have the evidence and clearly see them to learn about how each fire was started.
Kids getting fast toys isn't anything new.
Operating fast toys in public streets illegally is parents' responsibility.
I'd think the parents should also be held responsible in the proposed legislation when kids are caught breaking the laws.