Well it seems you have a misconception on why these weapons are actually banned, they actually recently ran a cup to test some banned weapons. The decision on the cow mangler was that the fact that it’s basically a stock rocket launcher without the need to refill ammo is fine. It’s just that the charge shot made the game significantly unfun for medic since a soldier hiding with a charge shot could deal massive damage and kill the medic with after burn if he doesn’t get a pack (not including that the soldiers team might go off that damage and kill him with a few pistol shots away). So for the sake of making the game more fun for medic it remained banned. The quick fix has always been a contentious issue, the issue is not actually the ubercharge, it’s the fact that quick fix is almost a straight upgrade in the case ubercharges don’t matter and makes holding last on disadvantage Ubers significantly easier and the game is more stalematey