The Wikipedia article does not make that point, and its section on criticisms of the MBTI (which itself should be treated differently from the general scope of Jungian theory, especially after a quantitative model of Jung's theory has been published, and further developments have been suggested) jumps around so much from micro-facet to micro-facet (effectiveness of executives?) that it is nearly impossible to take as a serious exposition. I am researching this area heavily myself and have to say that the Wikipedia writeup deserves serious TLC by those who have cogent arguments that lead to conclusions like the one to which you have leaped.