Why? It's small, reasonably robust, easy to connect. The first time I got a USB-C device I was shocked at how elegant and well-engineered the connection felt. As consumer devices go, it's great.
For context, I was a pro sound engineer in the film industry for many years, so I have lots of experience with industrial grade connectors and operating in hostile environmental conditions from heavy rain/marine environments to desert dust storms. There are times when I go straight to industrial/military manufacturing specifications, but USB-C is still great.