I am that guy. I don't go to hospitals, dentists, walk in clinics, family doctors, mental health providers. I haven't gone to any healthcare establishment unless it was in regard to pre employment screening since my father's military insurance stopped covering me about 20 years ago.
No you aren't "that guy". Sooner or later you will create a financial cost on the medical system. Avoiding medical care usually ends up in bigger costs down the line. But even if you completely avoid doctors and modern medicine you still will create medical costs by your existence.
At this point, if I become injured or sick in such a way that requires assistance to keep me alive, I'd rather not receive that assistance, and I have all the proper DNR boxes checked.
Oh bullshit. Even if you did have the sort of death wish you claim it doesn't matter. You still will cost the health care system by your mere existence. You think all that paperwork regarding your alleged DNR is free of cost? Do you think that you won't get carted to the hospital if you are in an accident? Do you think end of life care is free even for someone not seeking medical care? Nope. EVERYBODY uses the health care system whether they want to or not. EVERYBODY in society creates costs that others have to share. Only way to avoid it is to go deep into the wilderness and live off the land until you die, away from all humanity. Something basically nobody does.
If you want to be a part of society you get to share in some of the costs. Deal with it.