Eh, I'm not sure how seriously I would take this claim without corroboration from a reliable source. The article is a leftist attack on the Brazilian population for electing Bolsonaro. He's attacking, as he puts it, "a country currently swept up in the post-truth era and the anti-intellectual, climate-change-skeptic worldview embodied by far-right President Jair Bolsonaro." For lefties, calling someone a flat earther is an insult, so I'd want to know there is actual proof this claim is true to begin with before I started to draw any conclusions from it.