Which ever make you buy, first be sure it can be fixed when it goes wrong. Preferably fixed by any competent/practical user. Not only if you have to cart it to a dealer with secret tools.
Given that a majority of the younger population would appear to be in favour of staying in Europe I feel a moral obligation to vote with them. The past has been my time in Europe, the future is for the young.
I am sure you are right. It must be far more complex than installing an app on a phone, upgrading the complete operating platform on a computer or re-tuning a television. I have to ask my ten year old son to do these things.
Any bike you look at, first try it without power. When you are out and about and the motor stops, as one day it will, even from a flat battery, you need gears that will still let you ride home. Most I have tried are not low enough.
Boash have gone to extreme lengths to ensure that the user has no control over e-bikes. It is not to the users advantage. Its designed for cash generation of dealers and in fact means that although you think you own your e-bike, you don't. That is not to say I do not love my e-bike, best thing...