I wouldn't say he was any more pompous than anyone else. His reactions are perfectly normal.
When I graduated from college I worked for weeks on a resume, and I was proud of how great it was. My friends were impressed with it. I proudly showed it to a career counselor. Her immediate reation was: "I wouldn't hire anybody who gave me a resume like this piece of junk."
Of course, I thought, "What does she know?".
In later years I realized she had done me a great favor in bluntly tearing my proud work to shreads. When I look at it now I realize it *was* a piece of junk, and she did me a great favor in bluntly telling me so.
So, I guess I wouldn't call that "pompous", only a "normal reaction."