Every single group of people has some belief systems that are not only not backed up by testable hypotheses and science but also are often flatly contradicted by those processes. It is what it is.
This is apparently just part of human nature. It doesn't matter whether we're discussing Flat-earthers, white evangelicals who claim that Covid-19 is no worse than the flu, Black people who argue that the vaccines developed to protect against Covid-19 are actually part of a racist population control plan, East Africans who think that albino body parts bring good luck, East Asians who swear that rhino horn cures fevers and impotence, or for that matter Republicans who are convinced that Trump won the 2020 election.
Everyone can believe ridiculous things, regardless of their race, religion, ethnicity, gender, sexuality, etc.
Sometimes a sufficient number of people who accept untrue facts can have a serious deleterious impact on everyone else. As the aphorism attributed to comedian George Carlin goes, "Never underestimate the power of stupid people in large groups!"
In the below case I hope that the behavior described will only impact the people dumb enough or desperate enough to engage in it.