But while strictly speaking behaviour and concern overall are to your point similar; I think what additionally bothers me personally [and I recognize this is an emotional reaction] is this feeling of overt attempt to mislead.
A bicycle is a bicycle is a bicycle. They are predictably unpredictable - I understand what to expect out of them ("Anything":).
These electric scooters are intentionally made to look like a licensed motorized scooter which (in Toronto) is a vehicle like any other, licensed, insured and held accountable. Motorized scooter's behaviour is in principle predictable like any other car or motorcycle vehicle - they ride in the blocking position of lane and obey all traffic rules.
The electric scooters try to gain the veneer of respectability of motorized vehicle and look different than bicycles/e-bikes... but they do not behave like motorized scooters or motorcycles (and couldn't even if they wanted to - they cannot keep up with traffic to tide in blocking position and move with the flow).
It's dumb. It's also unfortunate that it's going to take ~10 people to die/permanent disability before anything is done about it.
I think you're right about the design of the bikes too. The ones I see are definitely designed to look and function like a moped/motorcycle.
They have no training, no safety equipment, no licensing, no enforcement, no accountability, and no care. In the meantime everybody else around them is trying very very very hard not to be part of a fatal accident.
So like the poster, I have no problem with technology. I have huge problems with lack of regulation and enforcement, and/or the users of such vehicles.
They are fairly explicitly advertised as tool to avoid regulation, insurance, rules and safety, for their own personal selfish convenience; and again, explicitly designed to mislead - they are designed to look like a motorized scooter [why not make them look like an eBike that they are?], but with semi-functional pedals so they can claim they are a bicycle.
Get these punks off my lawn! :-) [and let the hate and downvote begin!:]