Illegals to sue Arizona man !

Anyhow can anyone explain to me why this would even make it into court?

Because the State laws covering threats of lethal violence in a situation like this only really cover you if its your land , this land isn't the ranchers he just leases grazing rights from the State .
Now if he did more than just own a temporary right for his cattle to consume foliage on the States property he would be allowed to go round threatening to kill people on that land , but as he doesn't he cannot .
Simple isn't it .
He may however be able to apply the defence that he was acting as an agent of the lands owner which would get around the fact that it wasn't his land , but then the State would have to explain how someone "representing" them was threatening to kill unarmed people .