Just post a disclaimer that you are not a doctor or epidemiologist but rather a flu hobbyist who is self entertaining at home with flu conspiracy. As far as I can tell doctors here are not reporting the issues you just mentioned. Any info coming out of China is suspect at best.
Again most people who contract coronavirus make a complete recovery. Old people are hardest hit as they are from the seasonal flu, pnuemonia and anything else that comes down the pike.
And that therefore, what is happening to Italy, might happen here if sufficient containment is not acheived.
One other possibility, which I have read of but which I could not find confirmation of, is that there are two strains of the virus, which had different R0 values and morbidity.
It might be that Wuhan (and Italy, which had a LOT of Chinese people in the hardest hit geographic regions, working in the textile and garment industry), had the nasty form; and South Korea and Japan, the milder one.
"Old people are hardest hit" is comforting pablum. Tell that to the survivors of the now-dead-of-coronavirus cardiologist at the Children's Hospital of Philadelphia (Penn, an Ivy League School). As I pointed out earlier, both as an Ivy Leaguer, and as an MD -- and all the more so as a cardiac specialist -- the doctors would pull out all the stops to treat him. And he died of it.
Oh, btw, he was only 32.