The rational man as a concept is still used nowadays as often as it is, that itself is a proof that the concept is as broken as it can be. The modern consumer economy is based on irrationality.
I wouldn't say it's based on irrationality, but based on other things that aren't necessarily rational or irrational. Just manipulation of our rational+emotional brain sitting on top of our monkey brain which is sitting on top of our lizard brains.
