That's what I'm saying. (Probably going to get downvoted to smithereens) but how can COVID-19 _which is of the same nature of thousands of other known corona viruses_ be so diabolically different than the ones we know about?

I'd bet all these worst-case symptoms are _also_ present in those hit badly by the flu or other corona viruses.

Indeed, after some googling, same is true for H1N1:

https://www.kidney.org/news/newsroom/nr/H1N1Patients

and the flu:

https://www.ncbi.nlm.nih.gov/pubmed/984071

These type of articles posted by OP are mostly clickbait. While they ARE true, it's also true for all similar diseases.