You're missing a few things. One, bike paths here are designed for low speed traffic, and narrow. In the last two years I've seen a lot of crashes from ebikes on the bike path I ride to work. Two, they are practically motor cycles now. Bigger tires, bigger helmets, faster speeds, all that, and no licensing required.

That's on roads. The off road side it is trail damage, people getting stuck out in places they normally couldn't go to, etc.