I moved to the city for peace and quiet! I didn't know there would be so many people around!
Living in a city has more noise than outside of cities, but that doesn't mean that people deserve to be exposed to noise levels that are harmful to their health. This also ignores people who are born in the city, and can't leave it for various reasons.
Various laws on noise levels have been laws in NYC for decades at this point because it's a public health and quality of life problem.
Compare to a quiet suburb at 5:30am... dead silence interrupted by the neighbor revving their modified F150 audible a mile in every direction.
The delta is not the same.