I'm all for e-bikes. I've been DIYing e-bikes for myself for over a decade. But I also see the argument for needing a license. With additional speed and distance, kids can outpace their understanding of traffic flow, shooting themselves through intersections without understanding how drivers will/will not see them. Here in Utah, where parents tend to let kids ride dirt bikes on roads, or ATVs on roads, there are a few fatalities EVERY summer, from kids who didn't understand what actions put them in danger and which did not.

Now, I think waiting for kids to be 16 and get a license is overkill. But I would support a drivers ed program for kids to teach them how to be safe on e-vehicles, and requiring that course to be completed before kids can ride at 25-30mph in traffic.