my experience is that critical thinking is a continuum and that the vast majority of us including most Scientists are only somewhere in the middle that continuum.

To be able to think critically at a high level we need a mature level of self awareness and to have done a considerable amount of work on ourselves to know our filters, conditioning, triggers, wounds, biases, belief system, etc.... so that we are able to minimize how we project our internal world into the outer world and call it reality.