premise: I am not sure that I should have characterized the perpetuation of obsolete or archaic meanings as  counterproductive : perhaps  wrong,   misleading,   ambiguous,  or  old-fashioned  would have been closer to the mark; phrased another way, I must agree that people ought to use words in their current senses if they expect to be understood.
hypothesis: People who don't use words in their current senses are happier.