It's what a lot of engineers have been saying for decades: Looking at the surfaces of the artefacts, it's obvious more advanced tooling, than what was claimed by archaeologists, must have been used. Oh irony, the bits were already lying about in the museum's archive for a century.
Quite frustrating how archeology swings over the years from "we'll believe anything" to "we won't accept any claim without a preserved example". While some of the excesses of the past were clearly excessive, drilled holes should have been sufficient evidence of drills, people living on islands should be sufficient evidence of boats, rope-worn bones should be considered evidence of rope and so forth.
Archaeology has come a long way over the last couple of centuries. It used to be little better than grave robbing and crackpot (often racist) theories. Archaeologists made all sorts of assumptions that turned out to be ridiculously (and sometimes tragically) wrong. Excavations once involved dynamite and bulldozers. Things have changed. Techniques for re-analyzing and extracting new information from old finds are allowing archaeologists to make discoveries without digging at all. Even a careful, modern dig is a destructive act that can only be conducted once.
It's not frustrating. It's progress.