Was the tone of this response called for? Appropriate? NO.
This is a textbook progression of a dictator. Starts out humble and lovable. Gradually becomes more and more tyrannical. Thou doth not question me. Even the most benign inquiries are met with rage. It is standard stuff across the board: the downward spiral into the Hell of ultimate narcissism.
The hallmark of a con artist is to meet all challenges with anger. How dare you. Attack the questioner. What's wrong with you. Are you ever stupid. That kind of thing.
This will only get worse as time goes on. The contempt for the Q following will become worse and worse; true colors will show more and more with each passing week.
Watch it unfold.