FEers, not understanding Astronomy, don't "get it".
1) Why is the N.Pole and not the S.Pole in the middle of the disk/land/Earth in the first place? Why not use Antarctica as the center of the map?
2) As your video said, the farther away from the N.Pole you get, the LARGER the star circles. Why after hitting the equator, do they get smaller when the sky is getting BIGGER?
3) On a sphere, the sky starts at a single point above the N.Pole (N. Celestial Pole), increases in size until the equator (Celestial Equator) then shrinks again to a single point above the S.Pole (S. Celestial Pole). On a disk, the Earth and sky CONTINUE getting larger all the way to the edge. Why would the sky get SMALLER, to a single point near Antarctica, when the sky is 50,000+ mi in diameter there?
4) Why would everyone south of the equator (looking
due SOUTH at its edge) see the S. Celestial Pole in the sky everywhere on Earth, just at different altitudes (that happen to correspond to their latitudes)? Look at your video. The sky is ROTATING around the N.Pole, NOT around a single point due SOUTH of EVERYONE below the equator.
5) Why would everyone in Antarctica (some 50,000+ mi along its edge - the "wall") be virtually looking straight up (70°+) at the S. Celestial Pole (center of southern star trails) and seeing 1/2 the sky to the equator? How would they see the other 1/2 of the sky
on the other side of the disk to the equator?
(
http://www.antarcticimages.com/keyword/Black/)
The TRUE S. Celestial Pole (in the sky above the TRUE S.Pole UNDER the N.Pole on the other side of the disk) is a single point that CAN NOT be seen from above the disk. This is the geometry of DISKS.
1) Get a Lazy Susan (merry-go-round, some disk that rotates)
2) Stick a cellphone/camera on it facing the edge (south)
3) Make a video of what you see when rotating it.
4) You will NOT get a single point but a huge arc/circle - the largest circle is above the edge.
QED