So Dr. Dave needs to keep it down and Loktar needs to move it along.
Ultimately, it's because "a general feeling of malaise stemming from a feeling of powerlessness in the face of the new problems caused by our continuing transition to a mass society" isn't really something you can diagnose or treat, really, so they try to pick up the slack in other ways.
Cf. Japan, where they try and deal with a more advanced case of it by denying the existence of mental health problems altogether.
Japan has its overpopulation problem figured the fuck out.