While the cited link is broken, the dating of celestial folk tales to remote antiquity is far from a fringe theory. The fact is that some of the earliest recorded information is related to celestial motions (whether for farming or rituals, who knows). Stonehenge is a gigantic calendar, along with MOST other megalithic constructions across ALL cultures. The history book keeps getting pushed further back, sites like Gobekli Tepe depict megalithic construction from around 11000BC (before agriculture) with hieroglyphs and depictions of celestial constellations. The cave paintings of Lescaux depict constellations and religious/magical divination acts. It would be more appropriate to refer to the fields of comparative mythology, theology, and art history as fringe fields :)
There is a huge difference between linking direct observations of the stars to things like Stonehenge, and looking at stories that are thousands of years old, and linking them to a single detail of an oral history that would have to be 100,000 years old to make any sense.
Gobekli Tepe is actually a good example: even though it's a mere 11-13k years old (Wikipedia says 9000BC,not 11000BC, but that's anyway irrelevant), and even though it was still being used maybe 8k years ago, we have no oral histories about it, and no other memories of it, except perhaps a vague idea that the hill it was on was sacred.
We also know that human cultures find certain numbers as especially meaningful - 1,2,3,7 are all numbers that hold special meanings in mythology all around the world. It seems way more plausible then to interpret a myth about six stars expressed as 7-1 as being a way to fit a 7 in the story.
Edit: note that in good viewing conditions, there are about 11 stars in the Pleiades clusters visible to the naked eye, though 6 of them are significantly brighter: https://www.naic.edu/~gibson/pleiades/pleiades_see.html
