Anything travelling 30mph has to travel on the roads. Class 3 ebike owners who ride on shared use trails are a menace and a serious threat - to pedestrians, to other cyclists, and to any goodwill cycling has in the community.
Heck, I get sometimes overtaken by people riding illegal (in EU) ebikes on a bike path. Mine is heavy duty enough that it can maybe do 30 kph with leg power. Theirs do 45 kph and it's getting dangerous.
Mostly delivery people use those. The lanes are narrow, so if there's oncoming they would likely crash...
