(I haven't read the previous article.)
https://www.newscientist.com/term/cytokine-storm/
The concept of the biggest danger of COVID being hyper immune response has been mentioned here before. It was mentioned as a reason not to use NSAIDs like ibuprophen. The concept also seems to be borne out by this:
ppl with rheumatoid arthritis and lupus aren't immune deficient, in fact just the opposite.
They only become immune deficient (or technically immune-modulated) by the hydroxychloroquine drug- which is now being advocated for treatment. Theoretically that makes everyone treated for it with corona "immune deficient"