im sorry but didnt it say EVERYONE? So obviously babies would be included. By pressing red, you're effectively killing half of the younglings. Parents, if this scenario was real, would realize that and likely press blue too to save their children. Even children wouldn't comprehend that every single soul would need to press red to save everyone and just see blue to save everyone and just press it. Surely the parents would realize this and also press blue.
If you press red and win, you're likely condemning half of all babies to death without a shadow of a doubt since they cannot comprehend this scenario. Likely killing the parents of said babies, young children, mentally impaired individuals, people who believe in the kindness of others, depressed people, and a lot more. I just feel like there is no play to pick red at all unless you're genocidal because we KNOW for a fact that half of babies (around 325 million) would die without ever knowing why.