Why do you say maltodextrin has no nutritional value? From a metabolic recovery / glycogen replenishment perspective it's the most efficient thing you can inges

Why do you say maltodextrin has no nutritional value? From a metabolic recovery / glycogen replenishment perspective it's the most efficient thing you can ingest. Pure maltodextrin (aka "carbs in a can") mixed w/ sugarfree beverage powder is the go-to during/post-workout drink for elite athletes across many sports.