We all have internal dialogues, and one regrettable element of my own is that this phrase pops in my head constantly. Growing up, it was always followed by lies of varying shades. Truth and love are both words to which I am borderline phobic.
I will add a semi-related, but not really, point: if a psychotic tells you that the bathroom is the third door on the right, and they are correct, this is useful information.
When you dig into psychology, there are all sorts of trick mirrors and trap doors. You are projecting. You are indulging your infantile self in fantasy gratification, or whatever.
One can easily psychologize, as one example, people like Alex Jones, who see Illuminati everywhere, who think that a cabal of several hundred super-rich, super-powerful people is plotting regularly at the Bilderberg conferences to institute a global government, and abolish democracy and human rights. You can break him down. You can say that he is suffering from some psychopathology or the other.
But at the end of the day REALITY still exists. Truth statements can still be made which can be validated or falsified. And if he is right, EVEN IF he is crazy, he is still right, correct? Third door on the right?
For many years of my youth I eschewed psychology for this exact reason: it can make lunatics of the sane, and treat the insane as wise elders.