It does address it a little in that our protaganist has an aversion to guns, or was it God, but most farmers are not our protagonist. These are aliens that would walk into houses by themselves, whose best weapon was some noxious gas, who are so fragile they die when exposed to water.
Farmers would kick their asses so fast I don't think they would get a chance to touch water. But in holywood nobody owns a gun unless it's an action movie. Nobody just casually owns a gun like in real life. These people don't seem to realize that most of the US is armed.