It's about providing health care to people so that there are significantly less people who need to die early due to illness that is treatable with appropriate health care.
It's also primarily about people not getting bankrupted from a procedure, whether they lived through it or not. A loved one can die atm but on top of that they get 300k medical bill
To say M4A should be a magical elixir that 100% cure everyone is complete idiocy
But you're arguing with a deliberately obtuse waffler with a track record of denying evidence in favour of slanted convenient BS, so you will never get a reasonable response