Flat Earthers hold their belief because they know something's off about the official narrative and it's the closest they've gotten to the truth. It's the most stigmatized and ridiculed theory, not because they believe in a flat earth, but rather the other truths many have uncovered along the way.
(media.communities.win)
Speculation
“Planets” are wandering stars. We live on an infinite plain. You can see the big dipper and Polaris in Australia proving we arent on a ball.