No, that is just wrong.
SARS-COV-2 is a virus. It is not an autoimmune disease. Your immune system is not reacting to your own tissues. It is reacting to the virus, just like an immune system is supposed to. Immunology is very clear about this, though I admit that the details can be confusing at first. The lines get 'blurry' at the molecular level, Ship of Theseus, all that jazz.
Look, we all want hydroxychloroquine to work with covid-19. It would save a lot of lives, potentially. That's a great thing. If it works.
But we cannot administer it without good proof. Currently, the evidence seems to say that it does not work. It may change over time and with more research, but we can only go off of what we know today.