So what, it switches to low-oxy. It does not even hold long enough to develop an anaerobic biogeocenosis. This is normal. This is how our Earth the planet work

So what, it switches to low-oxy. It does not even hold long enough to develop an anaerobic biogeocenosis. This is normal. This is how our Earth the planet works. I do not know why you think only aerobic biota has a divine right to live. Do you now feel yourself not completely intellectually honest?