It's an ordinance just like anything else. You have to have things like this or else you end up with people with old cars up on blocks in the front yard. The people in charge decided they want everything to look similar within a certain tolerance, and these people crossed the line. I can see their argument, and that's why they get to go to trial over it instead of the city just handing them a big fine. In my town we have ordinances too, and I'm sure most places do. When I first moved into my current house, I didn't own a lawnmower for a while and my grass got pretty unsightly. The city code enforcement officer came by and warned me about it. Did I complain? No, because I chose to buy this house in this town and so I have to follow their rules. If I had a farm out in the country, I wouldn't have to mow, and I could rip up the grass and replace it with woodchips if i wanted, but if you live somewhere with rules, you have to follow those rules! It's amazing how opposed some people are to this simple fact.