Masks and Parachutes

So the latest anti-mask argument making the rounds is: there's no point in wearing them because any suggestion that wearing masks reduces the transmission of certain airborne contagions is "not validated by any study." Which, so far as I know, is true (at least, I haven't looked for any). And here is something else not validated by any study: there has never, not once, been a scientifically rigorous double-blind study testing whether parachutes are effective at reducing fatalities among people who jump out of airplanes. There exists nary a single peer-reviewed study any pro-parachutists could link to, showing people with parachutes do any better than a parachute-free control group. 

Clearly, then, the only logical, rational conclusion is that parachutes are worthless -- or, at most, are only useful for identifying the cowardly sheeple amongst the skydiving set, eh?