Thing is, some blocks were really somehow cut. And that they had such weights. And then they had to be somehow transported. Sometimes even very far away. Evidence for those events exist. What does not exist is evidence of tooling and consistent methods used. All there is available are sets of more or less extreme theories. And those in video are quite extreme too. They are simple, and workable, but require some extremes to work on given scale. Be it size+weight or time. What video mentions is "Atlantis" and it being sunk. Some historic record say that Egyptian technologies paled in sight of those on "Atlantis". While they downplayed this practically mythical land and made it into mere gas stop on way to America, it could be actually more plausible explanation. Those dudes on "Atlantis" could have been far beyond everyone at time. And depiction in video about sharp decline of technology across the Africa/Europe as this "Atlantis" sunk would actually point towards this place to be source of technologies used. And that Egyptians and others would not know all that was needed for the task or were not able to preserve know-how on their own. And if we were to believe about being technologically advanced and theories about sinking because they did something what critically failed... Then in a way, they could have been technologically far ahead even us. (In some ways.) But I think that at this point it is really not as important to have clear information about who and how, but to understand that we actually do not know. When we do not have actual records, it is best we can do. It is same as dead sea scrolls. Those have been translated over time. But nobody in public knows if all and if correctly. And it is like they do not even exist. Being ignored and not talked about. Would someone want to make some interesting movie, they can just go and read this and make something based on it.