Good question Kimmy. It's not about intelligence levels as very smart people have gulped down the Kool Aid.
For me it was Jehovah's warnings about not trusting in Earthling man. We don't trust in man since the "whole world is laying in the power of the evil one."
These two principles appear to have been cast aside by many of our Brothers. The Word of man whether being Organizational or Secular has been Idolized and given God-Like status.
Covid for me stripped back the veneer of the Brotherhood and showed who would rush to trust in man or who would wait patiently on Jehovah.
That for me has been the big difference between many on this forum and many in JW.ORG.
....seeing the World for what it is and thus acting with due diligence when it requires something from us.
1Jn 5:19 We are certain that we are of God, but all the world is in the power of the Evil One.
Psa 146:3 Put not your faith in rulers, or in the son of man, in whom there is no salvation.
Psa 146:4 Man's breath goes out, he is turned back again to dust; in that day all his purposes come to an end.
Psa 146:5 Happy is the man who has the God of Jacob for his help, whose hope is in the Lord his God:
Of course that still begs the question.....why did we see those principles and not the others?