There are no real anti-oxygen climbers. The article is trying to create controversy where there is none. It all comes down to style. More minimalistic of an ap

There are no real anti-oxygen climbers. The article is trying to create controversy where there is none. It all comes down to style. More minimalistic of an approach usually equals more "style points" (which are worth exactly as much as you think they are.) If you and I were to go try Everest, we'd be aiming for "completion", not "style points", and we'd probably use O2. ¯\_(ツ)_/¯