This doesn't need a source. It's common clinical knowledge and OP is right. Unfortunately, preliminary results using our usual immunomodulatory drugs have been catastrophic.
No, sorry, you still need a source. In fact cytokine storms aren't the only driver of pneumonia and we don't know yet exactly what the mechanism(s) behind ARDS is. Immunology is outrageously complicated, and not well suited to that kind of pronouncement.
You just have to do the science, there's no way around it. And realistically we may not have time.
In the current state of knowledge about both ARDS and Covid and given the time available, clinicians rely on traditional teachings to care for covid-related ARDS until solid evidence can be provided.
You just have to do the science, there's no way around it. And realistically we may not have time.