ventilators should be used on a first come first served bases
That's a pretty ridiculous suggestion.
You'd probably have the "stupider" toilet roll guy who didn't care about social distancing catching it long before the "smarter" guy who did care.
But by your own admission stupid guy would get one and smarter guy wouldn't.
Then you'd have all the doctors and nurses whose viral load had piled up coming along after without a hope in hells chance of getting one.
People need to be realistic and sensible. The average time of ventilation is what, 16 days? If you have a 90 year old on a ventilator for a month with a 50% chance of survival, BUT you could use that same ventilator for 4 twenty year olds who needed a week each with an 85% chance of survival... where would you put the ventilator?
They're going to prioritise those who have the most chance of recovering. Doesn't matter if you're a rocket scientist or a deadbeat dad on JSA.