Media Hot and Cold -- Cowart

This article confuses me as it almost contradicts itself. The author describes hot medium as revolutionary and culture changing like the steel axe missionaries provided to Australian natives, but puts the telephone as an invention in the classification as cool medium. I have to disagree with this assessment. Anyone today can look around and see that the telephone has completely transformed culture today. Then the author says that a hot medium provides a large quantity of information but the steel axe does not meet these standards. This article seemed too opinionated with not much factual support for my liking.