No, I think you're right on topic. MBTI is a starting point or reference point to organize, and by nature is left open due to the varying externalities of human behaviour. Especially in a case like myself that scores 50/50 on my E and I. It's simply a reference point for me, to understand the varying ways I would go about doing or thinking about something. You could make the case that MBTI needs to be supplemented with the Enneagram and Socionics, to fill in some of those externalities in behaviour.