People that have OCD. Clearly they have nothing better to do. I think if they came to my neighborhood then they would be having nightmares from the trash that is around. I have contemplated a clean up but I figure what's the point. It will just come back. I have better things to do. It's not that bad. I think any trash where it's not supposed to be is bad.
Grass that's too long? Maybe people are busy. Maybe their lawn mower needs to be fixed? That's pretty terrible what they are doing. Leave them be.