I have trouble sympathizing with anyone doing that kind of complaining, at least about the "regular" noises. I live close to where the subway runs above ground, and for the most part I only remember how loud it is it on the rare occasions when I open my apartment window, and even then I can use earbuds if I'm trying to listen to something. If someone
near Bloor and Christie was complaining about the noise of the IndyCar race, when I've only ever heard it after I've gotten south of King Street, how long and carefully were they waiting for the wind and atmospheric conditions to be just right to maybe think they could barely hear it?
I think the complaining about the noise of the planes is more of a knee-jerk thing left over from 50+ years ago when few people had air conditioning and spent more time with their windows open, and the planes of the time actually were louder with a higher and more screeching sound.
From what I heard from the anti-airport (YTZ) people during that executive meeting, they seemed to have now changed gears to move to on to more saying that it should be a park as opposed to claiming that the noise was unbearable.
When staying at a relative's house on the edge of the GTA, there was a couple of times I had left a window partly open, and been awakened at sunrise by a loud blue jay in the tree immediately outside of it, and in the spring well before sunrise by a robin and nearby cardinal having their bird larynx measuring contest to establish territorial rights.