What negative experience do you have with specifically people who are psychiatrists (not a fan of the practice either) that justifies totally dehumanising them like this?
Dehumanization is a term about getting rid of the evil and the good because being human is about both evil and good. That's not what the parent is doing. You're the one interpreting humanity through a dehumanizing lens. You should expect immorality and incompetence from humanity by default. Any other view is dehumanizing.