One egregiously loud motorcycle rolling through manhattan can be a nuisance to literally millions of people. This is unreasonable and a ticketing system like this makes a ton of sense. Police enforcement could probably solve the issue just as effectively. Cops ignore loud honking and loud cars when its right in front of them. If they would just stop ignoring such things the frequency would surely go down as well.
It allows for discretionary law enforcement. Cops love it.
They can ignore it you if they like you, or fine you if they don't.