COVID is BLOOD disease, NOT LUNG disease

I understand that. However, if haemoglobin is being destroyed and releasing free iron ions, the oxygen SATURATION level (as detected by a sats monitor on your finger) will stay normal or near normal, as it detects the difference between oxygenated and deoxygenation Hb concentrations; destroyed Hb with no iron simply won’t show up at all.
Instead, a reduction in total oxygen carriage induced by this mechanism would show up as an acute Hb drop on serial blood tests. This doesn’t appear to be a feature of the disease anywhere

I guess you didn’t get the memo. Plaquenil is DEAD. It’s a failed Psyop.