A lot of years ago there was a small movement in some part of FL to xeriscape - which for some meant growing tall grasses like sea oats. Then it was neighbors that were complaining rather than the city just taking it upon itself. Funny thing is that sea oats are beautiful and lawn grass is stupid and wimpy in comparison.
The city may be making a big deal about it, but really when you own a home, it's a scary proposition when someone is doing something that may make it harder someday to sell your house. I'm guessing someone complained. With a few paragraphs and/or a 2-minute "news report," you can't really get the whole story.