I think the “joke” (quotation marks are working extra hard here) is that anti-theists want to get rid of all religion, so they’re rooting for the Christians eradicating a bunch of religions.
It’s likely a misrepresentation of antitheism, but edge lords be edge lords.
I don’t have the hope you do. The sheer number of people that believe the moon landing was faked is just plain crazy. There were soooo many people involved with that process, yet it’s still not believed.