The NIH has also addressed this topic as well. "We speculated that in COVID-19, beyond the classical pulmonary immune-inflammation view, the occurrence of an o

The NIH has also addressed this topic as well. "We speculated that in COVID-19, beyond the classical pulmonary immune-inflammation view, the occurrence of an oxygen-deprived blood disease, with iron metabolism dysregulation, should be taken in consideration. " https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7267810/#:~:text=COVID-19%20combines%20the%20so,hypoxia%20(low%20hemoglobin%20saturation).&text=Oxygen%20deprivation%20and%20iron%20accumulation,regardless%20of%20the%20incurring%20pneumonia https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7267810/#:~:tex.... The guy complaining here is simply wrong. He's backpedalling because he made an unscientific and unsupported statement that oxygen deprivation is caused only by inflammation. There is plenty of evidence of other mechanisms at play. Nitpicking them is fine, pretending they don't exist is foolish, which is what he is getting called out on.