Can we leave aside the PC strawman for this discussion? IMO it's a meaningless term. What you're classifying as PC, I see as fair. We are all flawed (in fact, our strengths ARE our flaws, and vice versa). When an N responds to another N who makes disparaging comments towards Ss with a criticism of Ns, it's basically a way of saying "well, your shit doesn't exactly smell like roses, buddy."