You're right about that. Often, people's interpretations of the types are based solely on the stereotypes they encountered. However, one has to make sure one doesn't conflate what one believes to be stereotypes with very common tendencies within the types e.g. "stereotypically, ESTPs are good at being flexible" (the fact of the matter is, ESTPs aren't stereotypically flexible; rather, it's part of their nature to be so. I simply couldn't imagine a wholly inflexible ESTP).The best way to see types for what they are, is probably to get the common denominators they share. I've seen loud and violent ISFP's, and non-judgemental, uncontrolling ENTJ's. It's going to be difficult.