I literally say you don't need to have a lawn. Just don't mistake being lazy and not doing anything for somehow being a virtuous environmentalist. Build a prairie - it looks great when done well. But you have to put some work and thought into it. Just letting your lawn overgrow is not the way.

In this thread I even mention using clover if you really don't want to manage much and have a ground cover that prevents erosion and is attractive to bees that doesn't need fertilizer because it draws nitrogen from the air.

But yes, if you do nothing and let a lawn just overgrow I'm happy the town will cut it down and charge you.