Typical scientism Bovine Scatology (BS).
It might be precisely 10,500 years old give or take a year or 10,000, but current scientists have no credible way of knowing that, and most likely, never will. I'm willing to accept the notion the scrolls are around 2000 years old based on the archaeological and known historical context.
Yeah... Maybe there is more detail to explain they were not dound together, but the article also talks about greek fragments of hebrew bible, which would noy likely predate the aeptuaagint.