https://www.youtube.com/watch?v=3iMrNe0KNoA
Text article with more or less the same theme:
https://www.lewrockwell.com/2016/01/mark-thornton/crazed-skyscrapers/
I can believe this, because ease of borrowing in a bubble facilitates ego projects like this, but then bubbles always bust.
The FED has been feeding the bubble worldwide with zero interest rates, and now they raised that rate in spite of economic sputtering, and that will hit the brakes on a lot of financing.
Central planning, central banking always crashes eventually.