You have to keep in mind that the vast majority of psych-related clinicians are average to below-average performers that were too incompetent to become real doctors. That would explain why your "doctor" doesn't understand anything taught in a basic undergrad neuroscience survey course.
It's like expecting an auto mechanic to design a new car engine - sure, they could try their best, but at the end of the day, they're still an auto mechanic, not an engineer.
