In any event, CBT effectively treats only symptoms of mental illness. It is sold as just a plan to cope with it. It completely gives up on addressing the causes of it, and in doing so is probably missing many other symptoms.
Suppose someone suffers from anxiety and depression, and the reason is that they have a low self image, owing to perfectionism based on misperceptions of what success and failure are.
So now they come to the pseudo-psychologist and he tells them that when they feel down, they should force themselves to think about happy outcomes. So then one day he is in yeshiva and is scared about looking bad in shiur, but he just thinks about happy outcomes and it all works out.
And then one day he is dating someone, and are scared to marry them because they find something imperfect–because nothing is ever perfect. So he thinks about happy outcomes instead. But does he marry her? Wouldn’t it have been nice if he had seen a real psychologist who had gotten to the root of his issue instead?