Do you have a source for the last part?
Significant lung and myocardial injury and papers have honed in on ARDS as a real problem.
https://www.thelancet.com/journals/lancet/article/PIIS0140-6...
if you want some interesting details from American MDs there's this podcast
http://www.microbe.tv/twiv/twiv-593/
lots of subtle details that you can't get on simplified stats
You just have to do the science, there's no way around it. And realistically we may not have time.
In the current state of knowledge about both ARDS and Covid and given the time available, clinicians rely on traditional teachings to care for covid-related ARDS until solid evidence can be provided.