I really never address the flat earthers. But, i think i could have some input that would help them out.
It would seem to me the that the flat earthers world view is flat because they get their world view from Google maps. on a compuer screen, the compter screen is flat so their world view is also flat.
If the flat earthers would get out of the house occassionally, and away from the flat computer screen, it might give them a more round about view of the earth.
There were flat earthers way before there were computers, though. They don't listen to logic, either.
True but most of the flat earthers in my youth, saw it as a joke, where now many seem to be serious.
Then they got their world view on maps that was on flat paper before round globes were inventer?