Your wrong about this profession being a blue collar job. You are paid to make critical decisions which I don't think a blue collar job entails. You can't possibly train all the different scenarios that may come up in the course of day to day flying and that is why critical thinking skills are so important.
Truck drivers utilize critical thinking skills, Tugboat drivers, The driver of the tug which pushes your airplane back. "Critical thinking skills" is just a euphemism for having one's head out of one's fundament when considering your next action. In the words of an original member of ALPA, "We worked for years to get the wages and working conditions of the average American pilot above that of the itinerant farm worker, and then they failed the IQ test and started thinking they were republicans".