Why do you believe that only NON-THINKING individuals should remain in the Catholic Church?  There were many saints and theologians who disagreed very much with what the church was teaching in their life times.  The same goes on today. For the questioning members of  the church to leave does not bode well for the Church if all those remaining members are carbon copies of whatever is currently being taught by a mentally bland hierarchy, especially in the U.S. Most of our hierarchy get their degrees in Canon Law---and more than half of them don't know the theology behind whatever school of Canon Law that they have embraced.

Secondly, you don't know what millions of U.S. Catholics think---because there are really no forums established to poll the opinions of ordinary Catholics.  Both Vatican II and the 1984 Code of Canon Law stated that something be set up to poll ordinary Catholics----but it was never done.  Only Pope Francis wanted to hear from Catholics before the Synods.