I had a friend who went for a walk and woke up in the hospital. She was on a walking path and some other walkers found her unconscious not long after some ebikes passed them going very fast on the walking path. Debris at the scene seemed to indicate there was a big collision. She still has short term memory issues and headaches.

Some of these ebikes are like tiny motorcycles ... that unfortunately riders are happy to ride all over the place.

Many of them aren't tiny and hit 30mph or more, and as you note people ride them anywhere and everywhere: bike paths, sidewalks, school campuses, and other areas where motor vehicles are normally restricted.