"Most unvaccinated people will die as children" is just as stupid as "vaccines cause autism", and if you spread memes promoting the former myth, you do not have the right to feel superior to people who spread the latter
The way Reddit talks about vaccines you'd think the Angel of Death personally visits every child on their first birthday unless the mother (always the mother, anti-vaxx fathers don't exist) gets them vaccinated. When in reality, for every unvaccinated child who dies of measles, 500 will just get a fever and runny nose for a week. Meanwhile they smugly insist that it doesn't even matter if vaccines cause autism because "autism doesn't kill children", when if they could be bothered to do some basic fact-checking they'd find that autism makes you 40 times more likely to get lethal injuries in childhood. The worst part is that if you point out how stupid their memes are, they assume you're an anti-vaxxer; it's just like how after 9/11 anybody who pointed out how ridiculous Bush's policies were was accused of supporting the terrorists (EDIT: that was an unfair comparison, spreading dumb memes is not the same as invading a country unprovoked. But it's still the same worrying mindset of "our enemies are so evil that anything condemning them must be accepted, no matter how obviously wrong it is").