A lot of people are going around with this incorrect notion and I think it's important to point out that it's not true.
It's not true here or in the US. I don't know about other countries.
I've just watched a current TV programme with an American doctor who oversees all the patients in ICU and he says that the survival rate is actually 97-99% and that he sees at least 30% of people with the infection go on to not really make a good recovery and to be stuck with long covid or other problems.