Trust me, it isn't that annoying. Having sea lions that won't stop barking all day is annoying. Coyotes in mating season is obnoxious. A rooster that has decided to not be quiet is annoying.
So sure, kids doing kid things can be loud and obnoxious. But it is not really any more annoying than anything else. The ice cream truck playing a jingle is just not that big of a deal.
Now, I do suspect some folks have obnoxious trucks that play far far louder than they need to? In this vein, it is a lot like cars going down the street. At a base level, it makes noise and it doesn't really make sense to complain about it. That said, it is extra obnoxious to have people trick out cars and motorcycles to be loud on purpose. And those I have no sympathy for getting banned.