This is his latest video so we will have to wait for #2.
I can neither confirm or deny the claims made here, however, they are novel and deserve investigation.
What is painfully clear is that no raw-oyster-eating jut-jaw caveman could have made any of these structures.
I don’t recall seeing so many holes in photos of other popularly filed locations so if they weren’t bored to put the tenon of a wooden beam into then all bets are on the table.
I know there are a bunch of you out there that like this kind of stuff so I will link you to one of my favorite channels on this topic.
Some speculate that the sculptures of the medieval times, the Renaissance, and Baroque, are also casts... especially the very detailed lace and veil statues.
https://www.irenebrination.com/irenebrination_notes_on_a/2020/05/san-severo-statues.html
They all look like precast aggregates to me. I never heard about this theory but it surely explains better than bunch of slaves pushing rocks on rolling logs.....