I'm surprised they just haven't abandoned my thread.
In effect they have; that's why none of them will respond here. The flat earthers are very sensitive about their belief in some sort of "ice wall" that surrounds the entire perimeter of their flat earth model. This purported ice wall is critical to the geophysics of their model—without the ice wall somehow "containing" the continents and oceans, the whole model loses any credibility.
In other words, if we were to prove that their ice wall was nothing more than a fictional notion (which it is, as any scientist will confirm) then even the idea of a flat planet is immediately and totally refuted in one fell swoop.
Thus they offer all sorts of excuses as to why their "ice wall" has never been explored or mapped or photographed. They claim that all the Antarctic explorers—Scott, Wilkins, Mawson, or Ross were either mentally deluded or a part of the great round earth "conspiracy"—even 100 years ago!
Or, the most common excuse—that it's so cold, like absolute zero (0ºK or -273ºC) and inhospitable that no man or machine could survive in its environment.
If anyone should point out that QANTAS flies tourists over the Antarctic continent every week, and tour ships from southern Australia visit Antarctica on a monthly basis, then those suggestions are dismissed as lies by the visitors, or propaganda supported by the airline and the shipping companies—and their thousands of staff, captains and pilots.
Apparently all the tens of thousands of photographic images captured by those air and sea tourists are all bogus; they're simply Photoshopped or actually just images of icebergs.
—And to support all these claims of fraud, they produce what sort of empirical evidence? Absolutely none.