Israeli hyperbaric oxygen life extension "breakthrough" vs Mark Roth

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>https://www.sciencedaily.com/releases/2020/11/201120150728.htm
>Hyperbaric oxygen treatment: Clinical trial reverses two biological processes associated with aging in human cells
Meanwhile, Mark Roth (pic related), a suspended animation researcher, argues that while toxic in sufficient concentrations, CO and H2S are actually produced endogenously by every cell in your body as a way of controlling (and slowing) the metabolic rate, and that pure oxygen environments actually accelerate aging and death.
He's repeatedly stated that oxygen bars (if those still exist) and the oxygen masks they give football players on the sidelines, and any other pure oxygen environments are best avoided, if possible.
Who's right?