It's not personal experience. It's a segment of the market and also a lack of familiarity. The Macbook Air ships with only USB-C Thunderbolt and a large group of people are fine buying a dock to connect it or HDMI to thunderbolt.

While reading this article I thought it'd be interesting to read this on Android desktop mode and went looking for a cable while forgetting I could just unplug my USB-C laptop.