That's true, but 13 or 14 years ago, the NoSQL hype was calling for widespread abandonment of RDBMSs. They were claiming key-value stores and document databases would replace traditional relational databases the same way Reddit replaced Digg. That "MongoDB is web scale" video was lampooning the very real hype that people had, and how difficult it was to pick through it. It was as bad as the more recent blockchain hype.

Even looking at HN's reactions to that video show a few comments that did not age very well (although most of them did): https://news.ycombinator.com/item?id=1636198

The sensible takes were that NoSQL would supplement and enhance RDBMSs, but the hype was much more than that.