Do Skyscrapers Predict Recessions, or is it a Coincidence?

I quite enjoyed this video. It certainly convinced me that the perception that skyscrapers are a warning sign of a recession to come is really just a coincidence of a boom period.

After all, it isn't like developers are lining up to build skyscrapers during an economic downturn. Large scale construction projects are very expensive after all, so building such structures during a recession or a depression doesn't make much sense.