You cannot rely on "being right this time" to avoid participating in tragedy. The liars are too good. But you can refuse to hate and dehumanize those you are told to.
If you truly believe that medical care is a human right, then you should extend it to every human, regardless of how they wound up in the situation they're in. While you sometimes do have to choose, it is abhorrent to choose the rich over the poor, the socially well-adjusted over the outcasts, ideological friends over ideological foes. The standard we actually use is to do the absolute best you can for everyone you can.
You're right that it doesn't make sense to cause greater harm to avoid lesser, but rationing too quickly, especially from a place of moral judgement rather than medical triage, seems much more likely to be coming from a place of spite than a place of tragic necessity. We take care of enemy soldiers. We take care of people on death row. We take care of people who would see us dead, because this is what civilized and humane people do. If you are quick to deny care to people you perceive as not doing their part, you're coming from a perspective much, much darker than the general thought and ethics of this civilization.
I know everyone is angry and has suffered in the last couple years, and I know everyone wants to fight. There are people running around right now stirring up that anger and trying to direct it at their ideological enemies. By all means, fight for what you think is right. But if you find yourself indifferent to the death of your fellow man or even cheering for it, beware - it may make sense to you right now, but that will be no comfort in five or ten or twenty years if what you wish for comes to pass and you have to remember cheering for it.
> Should we refuse to treat any injury sustained by ...
You break it you buy it. Should the state and society in general be expected to shoulder the burdeon for people who chose to put themselves in danger, should 10 people be sent into danger to save the sailor who makes the choice to take on a hurricane?
Who do we save if we can only save 1 person, the heroin addict with a fatal condition we can probably save or the child that would be a flip of a coin?
> My conviction is to love and help them no matter what.
What of the children of the helicopter crew flying into the hurricane to save the lone sailor? No love and help for them? Or the person who doesnt get a bed because it is take up by others?
> I would find someone else trying to exert this degree of control over my life - requiring me to comply with their particular take on what risks were worth it - suffocating and unbearable?
Your choices are other peoples consequences. As a functioning member of society, philosophically you comply with these things on a constant basis, and no doubt demand it of others. It is not a matter of principle, it is simply a question of where the line is. If you have ever complained about anything you have exerted your control over someone elses life.