Just admit it: because Flat Earthers cannot grasp the complex mathematics behind rotating three dimensional spheres they've made it flat.
Who have made "it" flat? The flat earthers, or the people behind the complex mathematics?
Why would "the people behind the complex mathematics" make it "flat"?
I'd say the earth has never been "made flat", but has been a
Globe for much longer than human history.
Does anyone have any proof to the contrary?