Good thread indeed, this concept has come up more than once in my life, and the first time it was career altering. I was taking prerequisite courses to become a counselor, and the question rolled off my tongue “So is there such a thing as a fully functional family?” The reply was an abrupt one.“Absolutely not, if they appear 100% functional, there is a lot of things they are not telling you and have gotten really good at hiding them, furthermore, send them to me and in thirty minutes I will have half of them on the books for an appointment next week”. I will never forget that, it rocked my world to the point I was no longer interested in the ethics of so-called Professional Help.
Same thing with the “NT” title. I have regular meetings with a neurologist, not too long ago I had mentioned the term Neuro-Typical, "Stop Right There, What Is That". Well after regaining any type of composure, I thought I once might have had, I replied, “those without any mental disorders at all”. Same type of reply followed. “You give me one of these people who claim to be Neurologically Typical, and I will have them committed or on the books for a year”. At this point, I broke out laughing and he could not see why until I explained the previous paragraph, and his reply “Some people are rather passionate about Job Security”.