Can an INFj be not-so-empathic-and-nice?

[FreelancePoliceman]

I know an INFJ who’s immature, bratty, selfish, and generally pretty stupid, if it’s any help. Her Fi is more channeled into a narcissistic obsession with herself and acting “cool”/unique rather than empathy with others.

Type descriptions are inherently idealistic, but they tend to be positive, I think, for the reason that most people are more willing to relate to their good sides, such as they are, than their bad. There are crappy people of any type though.