It's true. Flat Earth is an old theory, but most of the modern usage is driven by fundamentalism dipping into conspiracy theories. There's a big focus on trying to erase "atheistic" science, or purport how Earth is chosen for this importance because of religious egoism. In the globe-busters video that
@Turf Skirmish posted a debunking of, at one point they say "It's quite easy to prove that it's the Energy of the Heavens and of the ether, the luminaterous ether.."
It's all parallel to a "comes from God for us" thing, cuz they fear that universal laws make us not important, and seems to suggest God isn't behind it. Fear of science as a tool of atheism or disproving-of-God sorta stuff.