Thank you for that.
Also just because a particular thing is only 12 thousand years old does not mean it was whipped up over night by some drooling village headman.
You have to actually look and see what the thing is to understand its complexity and sophistication and that Gobekli Tepe does not come from an agrarian society. It could only come from some older civilization which traces are scant and far between - realize that our modern society would be nothing more that rust and rubble in 12,000 years of neglect.
Human society prefers shoreline - shorelines which were 400-700 feet lower than today - all evidence is burred under hundreds of feet of sediment. When the Ice Caps melted - and from much evidence it was a very sudden even maybe only a few days - everything was swept away, gone erased, like it never existed.
See the 1958 Lituya Bay mega-tsunami for a modern example of what it might have been like on a worldwide scale.