How about if you drink a case of beer and then get in a car and crash it into a tree, ending up half dead?
Tell us, who should be denied treatment because of their choices?
900,000 people have died from covid virus in the last year and a half, let alone those who get extremely sick and take up hospital beds for weeks. It's a national/global emergency.
Usually a suicidal person has a degree of mental illness as well. So if you argue that those who don't use mask or vaccines are mentally ill, then that would be more of an apt comparison. However, still, there are 900,000 dead from Covid in the USA. The USA went to war in Iraq and Afghanistan (wrongly, I might add - we should have gone to war with Saudi Arabia, as 18 of the 19 9/11 terrorists were from Saudi Arabia, and Saudi Arabia uses its great wealth to fund madrases and terrorism all over the world). But that is a digression.
But, to your point, I personally agree that if there were 900,000 people dying of drunk driving per year, then absolutely yes, put them as low down on the treatment scale scale as possible. If anyone comes in for sepsis, car accident (not caused by alcohol), or any other reason, the doctors and nurses should immediately start treating the people who weren't drunk driving, and free up the bed - put the drunk driver on the floor in the hallway, whatever. Get to him or her when you can, as soon as actual not-at-fault victims are taken care of first. Because f-ck drunk drivers. They are JUST as stupid as anti-maskers and anti-vaccine people.