Yes, there is. Linguistic descriptivism is a stale 1960s academic fad wrapped up in a revolutionary energy that's dead and cringe now. Like that era's other insane postmodernisms, it rejects reality and reality has rejected it right back.
"Truly", we understand each other better and communicate faster when draw speech from a a collection of words, idioms, and grammatical constructions familiar to the listener. This linguistic inventory is not natural. It must be taught. Errors must he corrected, not validated. Not every utterance from someone's mouth has equal merit.