And if even half of that 20% needs critical care, then the hospitals are screwed. There are only so many negative pressure rooms, so already sick or weakened patients with some other malady or condition will then be exposed to Covid-19, making for a potentially severe, time consuming, and complicated health situation to treat.
Oh, and how does everyone feel about being treated by a health care worker who is infected? Because there aren't enough masks and suits to go around. The NT95's should really be tossed after every patient seen, just like gloves are, but i bet they aren't doing that. Simply not enough of them. When you check in at the desk in a waiting room, is the person behind the desk fully covered or behind an impermeable barrier? Bet they aren't. How often are the surfaces of the waiting room wiped down with antiseptic, and do we know if the cleaner doing the wiping is disease free?
When health care workers get overwhelmed, they get fatigued, which makes them more likely to catch things.
For me, I will be trying to avoid public places, gatherings of any size, and will only go to a hospital or clinic if I have no other choice. Will also try to be making food at home.