The big issue with seasonal constellations is again an issue with the south celestial pole. (as well as the more obvious, why can't all the stars be seen all the time.)
Explaining it for the north is trivial.
You have your magic disk of stars which rotate.
Stars close to the centre of the disk can be seen year round.
Stars further away can only be seen when they are near.
But for the south, it doesn't work at all.
The further south a star is, the more it would move due to the rotation of the disk.
People in the south should get completely different stars 6 months apart.
Instead it is observed to be just like the north. Some stars are visible throughout the year, some are seasonal.
This means the FE disk must have both the south pole and the north pole at the centre, a physical impossibility.