Cmon buddy, you are the one who sounds like you haven’t ridden an actual bike except maybe downhill 

Oh, so downhill speeds don't count then? We're saying ebikes are so dangerous because they can go those speeds in flat ground, but regular bikes thing downhill at those speeds are just fine? Let's be consistent here.

On flat ground it’s def is a big deal, 99% of cyclist have never hit even 30 mph on flat land. I’ve biked on a road bike since h th e early 1980s in city traffic in Montreal abd people that can follow me even going at 27 for a few miles are rare .

Man I don't care about your internet bragging. I grew up in the mountains in Salt Lake, I'll race you UP the hill and embarrass you before I do 35+ on the way back down. And again, who cares how long you maintain that speed? You hit a speed that nobody had complained about since at least the 80s, according to you. And now it's suddenly a big deal that Pele ate hitting that speed? Get out of here with that nonsense.

Of course doing it going downhill is much easier but Thats usually very brief in cities and if you lucky not hitting lights

Maybe in Montreal. When you live in the mountains it's half the ride. There are likely people hitting 35 MPH all the time on the hills of San Francisco (and every other city with a lot of hills).  

AVERAGE speed though for even a short distance will be much much lower. Because unless living in the Rockies most routes are up and down or flat and because of traffic and lights you will rarely be able to keep your speed up. 

Millions of people live in the Rockies. And the Sierra Nevada. And the Appalachians. And news flash, those 40 MPH ebikes hit those same red lights and stop signs and end up averaging around 12 MPH for the ride. They only ride at the high speeds in short bursts. They just do it in flat ground.

The only place I’ve routinely seen people going at 33-35 mph for any amount of the time is when in a peleton on flat non curvy roads like the F1 circuit in Montreal where really fast cyclists train . 

Man you need to shut up about Montreal already. You seem to think the entire world is exactly like Montreal. Maybe they do only hit 35 MPH if they're on an F1 track in Montreal, I don't know, I've never been there. But in the western US where it's full of hills and mountains, people hit 35 MPH all the time.

Some modified E-bikes though can easily reach this speed cause they fon’t have to worry about wind resistance bring cubed with speed or energy needed to get to a speed being squared . So small slowdown will not be much of a bother.

You need to go outside. You're acting like a bot who doesn't actually understand what he's saying. "Regular bikes can only hit that speed in short bursts because they have to go go downhill and hit red lights and city traffic...." Then "Ebikes can easily hit that speed so they're a problem...." (no mention of the red lights or traffic that also slow them down, or the batteries that only have power to travel at that speed for 20 minutes, but you did mention that you could maintain your own super high speed on the streets of Montreal for over an hour on your regular bike)