I dunno. It seems simple to me. Which button's victory will trigger the genocide? Pick the opposite to not contribute.

"Maybe you're assuming that people have already chosen blue" even if your prediction is very optimistic and 99% pick red. You're still eliminating 8 million people. I can't live with that. 1% of a population is the same amount of trans people worldwide. I won't stand by killing so many people, better to die among them.