INTJ here, with Fi.
I experience introverted feelings as very significant sentiments about my own behaviour, values, and life goals.
Whereas extroverted feeling is very conscious about harmony and conflict between people, introverted feeling is very conscious of internal harmony and conflict.
I would probably be as upset by finding myself in hypocrisy, as an Fe would be in seeing their best friends fighting. It also means that I cannot compromise my values or principles, even if it causes someone else to hate me. I guess INTJs can be seen as cold, because we won't betray our values for friendship's sake, and if someone even tried to get me to betray my values, I'll completely shut them out.