Psychiatrists are simply experimenting on each person they prescribe medications to. The status quo is indoctrination, and in this case, the psychiatrist wasn't even willing to use actual research based data to improve the treatment of their patients - even referencing that they won't make anymore money because the patient won't come back more often or refer more patients because of it. This is abhorrent unprofessional behaviour - but it's likely the attitude of 90%+ of the field.

Edit to add: if you think a practitioner putting their own revenue/profits above providing quality care, then something's wrong with you.