Ditto. And the size and fitting of the stones was something we'd be hard pressed to do today, if we were able to do it at all.
The deliberate burial of the site seems pretty likely to be for protection. Perhaps of a global catastrophe. So the information on the stones may well have been considered crucially important by the makers. And star information is generally considered important by cultures around the world, and constellations are often portrayed as animals.
So there's a basic logic here that's not too far-fetched. Matching the exact constellations are another matter - the article didn't seem conclusive. Possible, yes, probable... mebbe...
I'm not big on knowing star constellations. I imagine the animals used to represent them came into use in ancient times say one or two thousand years BC. This author is saying that they were in use at GT say about 9000 years BC. I find it a stretch for cultures to keep using the same constellation figures over a 9000 year period but yet language fractured greatly into tongues neighbors cannot recognize.