I'm not really sure what damage you're talking about, aside from posts from random people online badmouthing Maps. iPhone and iPad sales are still strong. Maps have gotten significantly better in just a few months (although I never saw a problem with it myself.) Everyone seems happy aside from people driving into an Australian desert they've never been to with no supplies— oh, and folks who need transit directions.
You can't expect any company to hire 10,000 people to work N amount of hours/day/years just so you can polish your app 5% more when that same polish can come from users submitting error reports. That's just nonsense.