The problem is, of course, enforcement. If there is truly a speeding and safety problem with ebikes, then the existing laws around bikes, ebikes, and speed limits can be enforced to solve it. Most consumer-ready e-bikes are already speed limited. For example, many won’t do any motor assistance past 20mph. (E.g. a class 1 ebike)
Different menace I'd argue.
However, try as I might I could not find a single case of infant being killed by a bike in my country. The only explanation I have is that thanks to the slow speed, bikers and e-bikers alike have time to slow down if there are a risk of a collision. It would be interesting to see UK statistics and hear if the same is true with elderly mothers?
In neither of these cases did we actually hit each other because I was alert. If I happened to be wearing headphones and deep in thought (arguably not best course of action on a pavement in a city but not wrong either), I'd be badly hurt.
I guess most people are alert enough to avoid the e-bikers, so accidents don't happen much, but they are still a menace (in my locale at least).
I have nothing against e-bikes as such, I own one in fact and it's a good piece of kit. I just think that as power goes up, enforcement should keep up.
What we got that serve a similar purpose is 4 wheel "e-bikes", also called quadricycle. Basically cars that has their gearbox altered to only use gear 1 and 2, which by eu-classification put them in the same category as e-scooters. Very popular with teens since it allows them to drive without a driving license, and very accident prone. Looking at the statistics, those should require a license to operate.
Unless someone throws something on github of course ;)
Lots of people seem to ride with it disabled though, confident that if the police catch them, they just push the switch and pretend it was on.
This stems, AFAICT, from mobility scooters for the disabled. On pavements they have to be limited to 4mph for pedestrian safety, but on roads it is probably in fact safer to ride faster, which they do. Hence a flippable speed limiter.