Interesting article. I'd take issue with a couple of things, however.
"Gobekli is thus the oldest such site in the world, by a mind-numbing margin...it was built around 10,000BC. By comparison, Stonehenge was built in 3,000 BC and the pyramids of Giza in 2,500 BC"
There's some controversy over the actual date of these familiar megaliths. The truth is that you can't carbon date the stone itself, only the organic artifacts found near it. Which means that archeologists will often only get a "last used" date, not a "built on" date. There's significant evidence that the Sphinx, Baal-bek, and some other sites are much older than 2000-3000 BC. The pyramids align with a date in the stars of about 10,000 BC. Recently they found a megalith-building civilization at the site of Sumer that even mainstream archeologists are dating at 16,000 BC. There's also been megaliths found buried in the sand in the middle of the Sahara that were constructed at least when it was last green....over 10,000 years ago.
The myths and legends all say one thing...the "gods" built them. And the stories are often similar. For instance in Indian mythology the War of the Gods involved Greek-speaking people with advanced machinery, including flying machines.
The idea that people evolved linearly from a point a couple thousand years ago, is, IMO, largely dogma. For example in ancient Egypt, the very oldest artifacts are the ones that took the most tech to build. You see that all over the world. The truly impressive monuments all spring from the pre-historical era of the Gods.
