All excellent points, but I think there's something like 2-5x as much tire surface area in contact with the road, and something like a x10 difference in weight,

All excellent points, but I think there's something like 2-5x as much tire surface area in contact with the road, and something like a x10 difference in weight, but I'm quite pointedly not googling either of these hand-wavey claims. Suffice to say, you're quite right, and I don't have all the answers. And I suspect very strongly that regulators are similarly answer-tare. Which is why, for now, it's a great idea to purchase e-bike-specific training if you're going to be spending a lot of time with an e-bike between your thighs, and, in a pinch, you can learn a lot from a motorcycle course. Anecdotally, I use the controlled-skid technique at least once a week, when decelerating suddenly (to avoid a pothole, say.)[1] My middle-aged miniscuses would thank me, if they had the power of speech. ;) [1] Sadly, I still have some of the bad cycling habits I picked up in my twenties in Chicago, blithely ploughing through six-way intersections and so forth, but none of the associated physical characteristics that made this activity if not safe then at least stochastically survivable. Specifically, reaction time, strength, and flexibility are all reduced, but all the bad habits I acquired are still there. This is the other reason I took the motorbike course: pruning leftover bad habits that I can no longer afford to offset.