Amazing and hilarious.

Genuine technological innovation in adaptation to low oxygen. Nay-sayers say it does nothing. Guys climb Everest in a week using said innovation. You can't argue with results, so they switch to:

"Himal Gautam, the director of Nepal’s tourism department, which is responsible for regulating expeditions on the nation’s mountains, said in an interview that using the gas was “against climbing ethics,” and that it would hurt the country’s tourism industry and the Sherpas who help climbers by reducing their time on the mountain."

and

"From a medical point of view, off-label use without a scientific basis and with unknown health risks must be rejected"

So it simultaneously does nothing and is unethical, and it doesn't matter whether it works anyway, because even if it did, it'd be against made-up "medical" rules.

I've never seen a stronger case for telling very serious people to go fuck themselves.

I don't know, maybe the 10 prior weeks of sleeping in hypoxic tents might have had some effect too. If they walked off the street, huffed some Xenon then blasted up Everest that'd be amazing, but it sounds like people are overfocusing on the Xenon bit.