rebdoniel- I am sorry that you have taken that position on psychology. It is a social science that can be tested. There are models of practice and therapies that are evidence based and their success can be judged by research and statistics. Advise giving is for friends, relative, maybe your Rav. Like a Doctor, who can diagnosis and treat an ailment, a social worker, psychologist and psychiatrist can do the same in the same way a doctor does. They are licensed professionals. There are many tests that have variables such as a blood test.
It is the prevalent attitude that mental health professionals give advise that deters many from using them. There are may unlicensed professionals calling themselves Mental Health workers, check credentials like you do your other professionals.
Just ask the families and first Responders who are depending on crisis workers and their clergy to help them through the trauma of the last few days. They are not getting advise but trained professionals who can assist them and their families.