I also know that MBTI was invented by a mother and daughter who had no qualifications at all - and in particular they had no psychometric qualifications and so had no way of making a Valid and Reliable personality test.
Also their test is plaigerised from, "PersonalityTypes", by Carl Jung who was a collaborator in WW II and a guru of the New Age religion.
In fact qualified psychometricians regard MBTI as Invalid and Unreliable as astrology. And all qualified astronomers know that astrology has no truth value.
In fact MBTI is used here simply to reinforce narcissism.