Don't blame you for being a bit angry. I wouldn't call it a "get off my lawn" stance. The traffic laws have effectively held this stance for decades. It's just newly applicable to e-Bikes that have become so popular.
Gross passing speeds and dangerous distances between passed lane occupants is criminal in every U.S. state where I've looked. It's a deadly threat, with motorized vehicles. And ugly incidents should be treated as such.
It's not as though such riders are completely unaware of the traffic laws. But with bikes it's not as though people go through a standardized and mandated training in order to operate the vehicles in public.
With the prevalence of cameras, including on-bike and on-vehicle cameras that owners are using, means that an increasing percentage of these types of riders will get caught and dealt with. Of course, bikes aren't required to have big, easily-recognized license plates, so it'll still be a crap shoot.
Don't know how to catch the worst of them. Hell, we've got all these motorcycle and car drivers who insist on traveling at insane speeds on public roads, and they've got plates that can be captured by cameras ... yet it still happens.
Wish there were easy solutions, here. Short of dedicated safe, wide, and speed-bump-infested bike lanes, I doubt there are many practical steps that can be taken.