I've learnt to be thankful for not suffering the same thoughtless disposition as the flat earther crowd and their kin. Generally they are anchored to illogical, closed minded thinking because it provides sanctuary in a belief system that elevates them superficially and without effort.
Outside of the above, its simply one of maintaining the status quo and power structure - survival instinct. The number one motivator for lack of integrity and a deliberately orchestrated agenda. What other possible explanation, when the magnitude of oddity is what it is.
Strictly off topic, but its worth covering where prejudice, bias and vested interest stems, to temper the fact from the nonsense. They excel on the latter front, so credit given for fulfilling their brief.