Having owned a Grom, topping out at 95kmph, 225lb wet, a bike that many of these models base themselves on, and acclimating myself to people's reactions when I would hope a curb or split to the front of a downtown intersection, I can say with confidence that the lifespan of heavy, fast, ebikes will come to an end soon.
The GTA contains people too pissy to permit so much fun as I had without expressing some derogatory slur.
A memorable amount of these escooters are already ridden with globs of tape holding in place front fairings.
Some are fine, some check blind spots before swerving outside the bike lane. The MAJORITY of those I've seen do not.
The problem I see is more the type of people that tend to ride them as Nobbie says.
That's fixed with legislation, because it's bound to be that that grandma will one day be hit, and the likelihood of it being the people that benefit most from ebikes, not the middleclassman, being the culprit is heavily weighted