Arguing with a moron just proves there are 2 morons.
Hatred is bad business. Going to war with a neighbor over blowing leaves is stupid.
Rent maximizing Corporations or "landlords" are only interested in profit now. You can only have a master/slave relationship with them. If you are negotiating with them, they know you are weak. If you let them walk over you, they think you stupid and weak, and will walk over again.
I don't know the laws for the OP's neighborhood, but if the land is residential, not commercial, then he has the right to expose what is going on.