As one who spent many summers working for the Forest Service near Jackson Hole, those who work around travelers can get really cynical and put out quickly. I'll not describe the situations I dealt with in the campgrounds, but the net was that we concluded tourists left their manners, common sense and any other social skill on the door step when they left home.
Your case is very different in details, however those who work and know the country tend to treat outsiders like most of them they see, as dumb idiots who cause endless problems for them. That does not excuse a rant, profanity, or stupid driving.
I found that the vast majority of people were wonderful some exceptionally so. A few rotten apples ruined things however fairly often.