Do you mean with a wrench, or were they expecting the quick disconnect to fit over the burst disk?
I'm very happy that someone took the time to make sure that all the SCUBA hoses only fit on things that won't blow them up.
Not sure about the rest of the world, but in the US, about 20 years ago, the fittings on all the new flexible gas connectors (for stoves, water heaters, etc.) were changed from a standard flare fitting to something unique, because with enough work it was possible to hook up the gas pipe to a water pipe (just like in the old 3 Stooges Films).