Lol that's a good one. Everyone knows flat Earth is a dangerous conspiracy and a danger to our democracy while sim theory has been approved by the culture controllers.

If there is any reason behind the distinction I'd say it's because flat Earth tends to get a lot of Christians behind it while sim theory is basically the rebranded hindu idea of maya in computer-nerd transhumanist packaging and as I said the social engineers love to push Eastern religious practices and beliefs in the west as a psy op (Buddhism, karma, nirvana, yoga, tantra, reincarnation, "we're all one, man" (monism), "it's all an illusion" (maya), worshiping demonic entities like Kali, degenerate gurus, opiates and hallucinogens, etc.)