Yes, if you were rated below a certain iq, you were classified as a moron or an imbecile, both medical terms of the time which became derogatory words. It does not really make a difference if you use moron, imbecile, retard or psycho. You insult somebody by implying some kind of disability, which is now widely regarded as offensive. So i think it is really kind of funny when somebody gets chastised by doing the very same thing in the same post. Some self-reflection might be in order.