Today, while out running errands on my hybrid, I saw an e-motorbike (this style) using the bike lane (dude also had a motorcycle helmet on).
Personally, I think these people should stay on the road like other motorbikes, as it’s clear that these are supposed to be an electric analog to ICE powered bikes.
I called this person out as well, due to my position being they actually are more of a hazard to other cyclists and pedestrians when the lanes switch to MUP’s without warning. Especially where they would be heavier than even e-bikes and would cause anyone they hit more damage than they would receive.
Personally I think it’s mostly about speed and weight. If it’s only a little heavier and faster than an ordinary bike then that seems OK, though you should be extra cautious and conscientious when riding in this sort of gray area.
If it’s a lot faster and heavier like a motorbike or similar then absolutely not.