Dumb clickbait. The Earth is 32% oxygen by mass. On a positive note, all terrestrial water (the fraction not below ground) will eventually blow off into space

Dumb clickbait. The Earth is 32% oxygen by mass. On a positive note, all terrestrial water (the fraction not below ground) will eventually blow off into space because the hydrogen disassociates at the exosphere interface, approximately a billion years from now. At that point, the Earth will be a lifeless desert above ground. It's possible some life could live below ground as thermophiles for another 1-2 billion years until the Sun EZ-bakes the planet.