Actually that's an argument against round earth. If the stars are not dots in a screen just outside of the sky and are instead not maps of destiny or anything programmed but massive fireballs far far away, it should mean you end up seeing the same all over Earth. You probably think that we should be able to see Mount Everest all around the world as well as the "whole sky" at once (assuming the sky is domed at all and isn't an endless ceiling that never touches the ground meaning Antarctica extends out 360 degrees nearly infinitely if not entirely so). The issue is a visual phenomenon known as refraction of eyesight. There's a maximum of what you can see even if what you stare at is endless, your eyes force a horizon to be observed. This is already proven beyond any dispute in short sightedness vs long sightedness, ask any optometrist, the short sightedness extreme of humanity physically is perceiving the sky to meet the ground further back (if no buildings or high rise structure obscure the line of Vision then it's more pronounced how severely further back) then people who are very long sighted. They physically see the Earth curving on a plane (as in "curving down off the edge of eyesight") further back into the like of what's seen than their long sighted counterparts. This would imply it's vision limiting Ys to see the same stars in a distantaner from the north as from the south but that's not all.
Since the entire southern hemisphere (ironic name to use as the Earth isn't a sphere in what I'm describing) is a lie in terms of proportion and amount of sky covering it being around Sven times larger at the most south of the world than what were told, the stretch and stars seen are able to be severely varied and different unless it were that stars are actually tiny sparkly destiny indicators or something else that's supernatural which are able to move around the sky such that when night hits a certain area they appear similar across the south. If you actually look into what you're asking and the details of stars, it will reveal to you how the North is much smaller than the most south in terms of size of sky not just land of course.
What you'll find also is that all high tech space research is being done in the northern hemisphere. Despite how developed it is, Australia cannot really compare let alone highly investigate anything it discovers in the south with someone in South America or Africa as "coincidentally" those nations are always too poor or stricken with war drama to ever have time or resources to look into "space".