I've noticed some people treat their lawn like a carpet. If there is 1 leaf, that's clutter that needs to be picked up. If a tire touches their grass, it's like you got oil on their rug. They've usually manicured their lawn into 1 species monoculture grass with zero weeds and zero bugs. Which because of this lack of diversity, it is now incredibly fragile.

For many people, their yard is like a room of the house. And they expect people to treat it with a living room level of respect. They've put a lot of effort into creating this fragile monoculture grass, and they're protective of it.

Maybe you can tell from the way the question is phrased, but I view the outdoors as different than indoors. If someone misses my driveway and leaves a mark in the grass, I don't care because I know the grass will grow back eventually. If leaves fall on my yard, I don't pick them up. These problems tend to solve themselves. At least that's my view. But I've noticed a lot of people see it the other way.