Does hypoxia raise questions about the causation of COVID-19?

Since many people coming into hospitals for problems other than COVID-19 seem to have hypoxia, is it possible that the real epidemic is caused by an agent other than SARSCov-2?

The Times article on hypoxia:

https://www.nytimes.com/2020/04/20/opinion/coronavirus-testing-pneumonia.html?action=click&module=Opinion&pgtype=Homepage

Should doctors be testing for hypoxia rather than COVID-19? Is the COVID-19 virus (SARSCov-2) a coinfection or worse, a passenger and red herring?

Should we be concerned that pigs all over China have a hypoxia problem in the form of African Swine Fever? Do we need to look to those pigs for answers about what is really going on?

Would it be easier to test for hypoxia than COVID-19.