As Mr Coffee already said, roadies riding too fast on MUPs is an issue but not as much as you'd think.
I know people who work for WABA and complaints about roadies going too fast has been a minor but consistent complaint for as long as I've been cycling, so 22 years.
Ah, but go back 50 years or so, and it's a different story.
During the era of bike messengers in NYC in the early '80s, professional cyclists going too fast was a HUGE issue in The Big Apple, a lot of complaints, and a lot of press... but like this controversy, the number of injuries (per capita, compared to automobile madness) was less huge. A few terrible, high-profile accidents.
What I remember was, there were guys who could do it-- who could scream up to a red light at 30+ MPH, on or off the sidewalk, and come to a dead stop, balancing perfectly, often clipped in, and wait virtually motionless in the middle of a pack of pedestrians, launching again without touching a soul...
And then there were the posers-- guys who were quick and loud with the whistle, but cut people off, knocked people over, etc.
I got good on my old Raleigh-- way better than the posers-- and I could carve my way through pretty dense pedestrian traffic without hitting anyone, but I was not in the same league as the pro messengers. Not as fast, not as much stamina, reflexes and balance not quite as good.
I wound up on the trunk of a taxi cab once. He did stop short, but I didn't understand about defensive riding.
The issue with non-compliant ebikes (and honestly even legal ones) is that now we are getting people with basically zero experience buying bikes that easily exceed even the fastest roadies.
True that. But many may learn, and learn pretty quick over the next few years-- if they can stay off their phones. A LOT more people are getting into eBikes, at least here in LA and in NYC, and at least they have a chance to get some skills on the public rental eBikes, have some sense of how it works.
Wealthy area, I'm sure lots of parents used to buying kids what they ask for. Loops back to the deceptive marketing companies selling those sorts of bikes have been trying, where they pretend they are ebikes while also wink-winking at how fast they can go once you enable "off road mode". Kids ask for them, sell the parents on "they are ebikes! Totally legal!".
I hope manufacturer and sellers of those bikes get sued, personally.
Me, too. We've got one family of illegal eBike riders down the block... but, those guys are now pro motocross riders who compete nationally. They ride at night, and they might be raising hell somewhere else, but they do slow down to near walking speed around the neighborhood to pass me and the dogs.
They used to ride motorcycles when they were 12 years old, which just drove everyone crazy. I was one of the few people who confronted both the kids and the parents, and it was a little tense, but at least we got them off the motorcycles, which I'm sure could do 100 MPH and were crazy loud.
I know them, we have an uneasy alliance. Caught them once throwing huge rocks into our pool, parents got together and disciplined them for it-- which included getting the rocks out of our pool. We had a good dialogue-- it's probably why they slow down now.
I think they did start smoking weed, though, which worries me if they are riding (at night, possibly underage, likely without a license, on overpowered bikes, etc.) Someone from their crew said to me once, "That is so cool your cat walks on a leash!"
And I was like, "Dude, this is a terrier." (Who looks, acts, and walks nothing like a cat.)
We had a laugh about it, but I hope they ride sober! I think that mostly, they're doing their fast riding in events on gas-burners, not around here.
