Winter will soon return :(

I don't get the logic.
I have several oak trees and a few pines, my neighbor on one side has one Oak.
If the wind blows some of my fallen leaves onto his property so be it.
I would never rake or use a leaf blower to put my leaves on his property.

Question is what's the difference with snow.

In the normal permitting process the surface drainage on a developed lot can not drain onto an adjacent property.
The way some lots are graded or by natural laying of the ground sometimes water drainage from one lot to the next can not be avoided. Our first house always got the run off from the neighbors yard and I couldn't do anything about it because it was considered natural ground laying