Actually the tall dry grass by the freeway is more environmentally correct. The grass grows, then drys, then a passing motorist throws out a cigarette but which starts a huge brush fire which cleanses the land in much the same way that a lightning strike would.
The homeowner grass is not natural at all.
Sure she puts pride and attention into her property, but it's the wrong kind of attention, and it causes a lot of nasty runoff that screws up a lot more property then her little chunk of lawn.