So is your general take on the problem that because the way it's worded (blue => "everyone survives", red => "only those who press red survive"), enough people would choose blue that therefore the empathetic/moral thing to do would be to also choose blue to save them? I can get on board with that line of reasoning
Yes! There is an excellent video on the subject, though it is in french (https://youtu.be/lo7iJnq_U9M?si=FFz6iHI_W4lz9V8D)
He did extensive polling with different framings to see how these affect the outcome.
In the Slashdot days, I suspect the weight of views would be on the side of "remove the warning labels, let Darwin sort it out." Interesting change in "hacker" culture.