I always assume everyone is a very well trained pilot on here. We have passed the necessary exams and underwent the many required training hours under instructors who are very competent at what they are teaching, to attain our pilot certificate or license. As we all know, that is no easy feat. From that bench mark I respect my fellow pilots and their competence. My opinion of them goes up or down from that point, depending on what they do.
It is my belief that a "brain dead" person, or person not considering safety, could not pass their certificate or license, as the adherence to safe flying practices, aka, good airmanship, is very much part of the curriculum of the competency based training that we did. You'd have to achieve that after you gain your qualification and experience, and I believe you would have to work damn hard to get to "brain dead" after such an achievement, considering how much safety, and good airmanship, is drummed into us during our training.
Also reinforced by the fact that one little mistake or omission may result in our demise, makes me more inclined to practice good airmanship and not to forget our safe flying practices, that I have learned. These lessons were often learned from the blood of aviators who have gone before us.
Tony