A mind incapable of discernment is perfectly capable of lumping all kinds of things together that should be differentiated. Just think how many people think Fascists and Socialists and Communists are all pretty much from the same camp. It is enough to make the thinkers reel in their nightshirts! That doesn't mean there is any empirical standard allowingt he lumping, or disallowing it. It's just that stupid is pretty endemic and takes liberties on its way to absolute mental sloth whenever it can.