Does "everyone" really need "help" from the medical profession? The dental profession? I think you may be showing signs of stigmatizing mental illness yourself a bit, there.
But I'd argue that a psychiatrist is a medical specialist in the same way that a cardiologist or a urologist is. Everyone needs to be aware of their cardiac health and see their General Practitioner if they have concerns. Not everyone needs to be diagnosed with a disease by a cardiologist. Ditto mental health.