The MBTI isn't what matters--it's just a tool created to help people gain access to a tool that helps people make constructive use of differences. I use the theory to help people resolve conflicts, heal wounds, and help all children succeed.
But what I wrote about Myers and Briggs is true.
Whether psychometricians believe in the instrument has nothing to do with whether, in the hands of a capable facilitator, one can help people get along.
I think it is to your credit that you use theory to help people resolve conflicts, heal wounds, and help all children to succeed.
And perhaps I am just being pedantic by focusing on the history of MBTi.
However I am aware that theory guides action. For instance I am aware that the theory of Marxism, over 70 years and across the world, led to the death of 100 million of their own people. And I am aware that the Myth of the Noble Savage has led to the continuation of child sexual abuse and the murder of tribal women.
On the other hand I am aware that the political theory of Liberal Democracy has led to the limitation of power and what we call political freedom.
And I am also aware that the modern economic theory of Adam Smith has led to the overcoming of scarcity for the first time in human history.
So it seems to me that theory can have good and bad effects.
So when I examine MBTI, I see it was copied from Carl Jung who failed his own Analysis with Sigmund Freud and who volunteered to collaborate with the NAZI Party and who abused his female patients. And after WW II, Jung became a New Age guru.
And although Mrs Briggs and her daughter had a college education, they had no qualifications in psychometrics.
So my criticism of MBTI is two fold - first it doesn't work and second it reifies the psyche.
However I do accept you want to help people understand individual differences. And so do I.
Even yours and mine.