This question has emerged again: Will global warming reduce available oxygen?.
The accepted and significantly upvoted answer basically concludes that the claim has been made in a peer review journal. It does not assess the credibility of the claim.
This question Could global warming lead to an oxygen shortage by 2100? has been closed as a duplicate despite it making a much more testable version of the claim based on a direct quote from one of the authors of the paper. All the answers demonstrating the extreme implausibility of the claim have been ruled out as original research (apparently because pointing out that the stock of atmospheric oxygen is at least 10,000 times bigger than the annual consumption of oxygen is theoretical despite both numbers being in the literature and the obvious conclusion being we can't deplete oxygen that quickly).
I've had the date about theoretical answers before and have failed to convince moderators on this topic.
But surely the more significant issue is that the existence of a claim in the literature has no bearing whatsoever on whether the claim is true or plausible? If we took that view as site policy, the site would be filled with contradictory answers. Surely even for claims made in peer-reviewed sources, we need to assess them agains the rest of the literature and the basic accepted facts of the subject area.