All I ask is that ebikes are limited to pedal assist and have a weight limit.

Does the weight limit include the rider? If not, then it doesn't really help/change anything. There's no difference between a 30lb bike ridden by a 300lb person and an 80lb bike ridden by a a 250lb person. It's still 330lbs total in a collision.

I'm personally pro-throttle, even though I rarely use it. Had to stop hard and went halfway over the bars injuring my leg; it was nice to be able to get home when I wasn't really able to pedal.