So many cringe statements in this post I'm not going to reference them here. One note which I think is missed often with heavy electric cargo bikes is a simple equation, used in car collisions to determine safety requirements.

F = 0.5 mv^2

The electric nature of these bikes makes them go faster than regular bikes so the force in case of an accident is increased by the square of increase in velocity. Add the increased mass of these cargo bikes and the force on impact is very large. It's very surprising there is no regulation on use of these bikes on normal bike lanes or sidewalks which I see often in places like San Francisco.