..... no other feed that i know of has the say 'roger' after EVERYTHING the pilot says. once again, there is a good reason to say 'roger' a thousand times in an hour, but it is really annoying, i betcha for the controllers as well.
I'm probably stating the obvious to most, but Toronto is in Canada not the US.
The rules for Canadian controllers, although similar in many areas, are not identical to those of American controllers.
Canadian controllers will acknowledge the receipt of instructions and clearances read back by the aircraft as confirmation they are correct.
Technically the aircraft's call sign should be used as well, however, as you've probably noticed, Toronto arrival and departure can get a bit hectic at times, and the aircraft call sign is often dropped so all you are left with is "Roger".