People from all occupations, socioeconomic classes, genders, cultures, and backgrounds are mean and arrogant.
For example, the vast majority of the family members and visitors at my workplace are not healthcare workers. However, these people are rude, spoiled, demanding, disgusting, disrespectful, pushy, and abusive. The vast majority of motorists on the road are not healthcare workers, but they do mean-spirited things such as cut in front of people, run from the scenes of collisions, flip people off with the middle finger, and act rageful on the roadways.
Let's not generalize about healthcare workers, when people from all nooks and crannies are mean.