They come correctly assigned from the chip manufacturer. The manufacturer supports DisplayPort over USB-C, and Google removed the code in their implementation.
I use Samsung Dex as a daily driver basically. I'm a doctor and I use it to review patient charts on Epic. I also fully transitioned to Google docs+reworks for working on publications. It's so easy to set up wherever I go. Amazing battery life and incredibly lightweight.
Tbh I usually just use it to play games on a bigger screen with a Bluetooth controller when I'm bored, Nintendo Switch style. There are plenty of console-style mobile games + streaming services that can make it a pretty good time killer if I'm the only one in a waiting room or something.