Who is Reading Jordan Peterson to Learn about Christianity?

As opposed to find a way for self-improvement?

Jordan Peterson’s Jungian best-seller is banal, superficial, and insidious by Dr. Adam A. J. DeVille
The real danger in 12 Rules for Life: An Antidote to Chaos is its apologia for social Darwinism and bourgeois individualism covered over with a theological patina.

The introversion/extroversion distinction or spectrum has its roots in Jungian psychology. What to make of this sort of personality analysis?