*ping* Your wheelhouse.
It was that guy… Fred, Fred Head.
Had a massive cranium… “ like a melon on a toothpick…”.
” new archaeological evidence shows that the statues, known as moai, were not carved by a single powerful chiefdom.”
Who’s to say that the “chiefdom” didn’t order the carving of them? Or set up the quarry “workshops” in the 1st place?
No alien technology needed. The people before us were just as smart as us. They had different tools and knowledge, but they were just as smart, often, smarter.
Bookmar

Total, TOTAL!!!! pure speculation seeking a foundation that has no evidence.
I believe the Moai were created not by the people now identified with them, but by people long before them whose civilization existed during the last ice age when the sea level was 400 feet lower and the Easter Islands were mountain tops to a civilization destroyed in the global floods 10-12,000 years ago. The later arrivals, refugees from the floods in the Pacific area, adopted the Moai and built their own myths about them.
Amazing that anyone actually believed that any “head of state” ever did any real work, and accomplished some major task by himself. It has always been and always will be the subordinates doing the work. These scientists are deeply stupid.
Jack Kirby figured it out decades ago.
That doesn’t solve the fundamental mystery: Why did they do it?
The same people who built the statues and built the polygonal masonry on the island. Obviously the Inca!