Hey OP. 2 words for you............
"Harley pipes"!
end rant
As much as I agree with OP's general statement that a portion of aftermarket exhaust for sportbikes are loud, I agree more with the quoted statement above.
A sportbike pipe is loud in close quarters. Half a kilometer tops.
Some Harleys with aftermarket pipes can be heard for miles on end once it passes you, and it's a very low, bone-rattling sound.
My ex lives close to Main/Vodden (for those who don't know, that's in brampton). I remember standing in the front yard one day and hearing a bike go north on main.
I couldnt see the bike because I was a street over but it was as loud as if I were standing beside it.
I was in awe for over a minute as I stood there and listened to it until it hit a red light at Bovaird (i assume, gauging by time/average speed on main and also having driven that way 345489534 times).
There could be 20,000 Harleys in GTA, but it only takes 1% of them who are retards (with these stupid straight-pipes) to make their image bad.
It's the same with sportbikes. Stock exhausts aren't loud at all. It's the smaller percentage of cat-deleting-baffle-removing dummies that ruin the sportbike image.
My slip-on has been called "loud" by my neighbor.
That's because she has a newborn and the baby's room is right next to my driveway, so she just wants to complain and have me pay for a fence (she's been trying to get me to pay for a fence for over 3 years now. If she wants a fence, she can pay for it herself).
I've had 3 people ride my bike and although it's "loud" when you're next to it, once they drive off and are over 100m away, you can barely hear it.
I'm sure you're only hearing a small percentage of bikes that actually travel on that road per day.
You only hear the loud ones, since the quiet ones go by unnoticed.