I use one of these for two 4k monitors, sound, ethernet, mouse, webcam, AND charging. It's amazing having one cable to plug in when I work from my desk. Unfortunately requires one of those $400 docks though.
So now it's 2 cables: 1 from the hub, 1 from the monitor. Both USB-C.
WTF guys?
My Apple monitor from 2009 just worked with 1 cable (no power, but still).