Don’t remember the source but it was about how blood vessels adapt to damaged parts of the lungs and O2 supplement would suffice.
It is no secret that ventilators can damage the lungs.
You "can" be an ass...and I "can" be an ass....
I've been one...I know you have been one.
I was chatting online with my HS girlfriend. More than 40 years later, we are still very close. She's a cardiac RN. She's been working in the local hospital's ICU (in NJ) as a "liaison" between patients' families and the ICU. What she does is set up iPhone Facetime (or other) sessions with the families so that they can "see" the patients before they die.
I asked what she thinks the survival rate is for those put on ventilators. She said 15 to 20 percent.