“Triaging patients in this sort of situation is to ensure that those likeliest to survive get treated.”
I always thought triage meant who gets treated first, not who gets treated and who doesn’t. If the plan is to not treat certain people at all, it isn’t triage.
The original version of triage, developed by Napoleon's army was to divide casualties into three groups (hence "triage"): One group was going to die no matter what you did. They weren't going to get any help. Another group was the slightly wounded. They could wait. The third group was the badly wounded who could be saved with immediate attention.