Because when you run out of ICU space, there is triage. There was triage last week. There is triage next week.
Who gets care first?
My point is that many people who are unvaccinated would prefer this, than to be forced to be vaccinated. (and they are effectively forced now in many places)
There were two arguments used to justify this imposition:
(a) - the herd immunity helps protect those can't protect themselves (too young, too old, immuno compromised)
(b) - it overwelms the health care infrastructure making it so that in certain places people can't get emergency care because the ICU's are full
Now the first argument (a) seems to be not true, and the second argument (b) seems to me like 'personal responsibility'. If you want to freedom to make these decisions for yourself (such as to get vaccinated), you are only accountable for the consequences of that for yourself.
The idea that you demand to not be vaccinated, but still get first-come-first-served emergency medical care at the expense of others, sounds to me entitled, spoiled and selfish.