It's only society's perception that having a weedy or crab-grassy lawn is white trash. As us humans are always trying to change our surroundings to fit what we think they should look like, instead of leaving them to what they actually should be. I understand cutting it is necessary to keep away ticks and bees and things and allow kids a place to play, but constantly applying chemicals seems a bit of a waste.
A white trash lawn to me is having lots of toys in the yard, bits of trash flying about, maybe a broken down car.