Whether a particular USB-C accessory actually works or not should be very simple, but it very often isn't. All sorts of issues crop up in practical reality beca

Whether a particular USB-C accessory actually works or not should be very simple, but it very often isn't. All sorts of issues crop up in practical reality because there are many protocols and feature sets all bundled into one connector and not all devices implement them. Go to the reviews of practically any USB-C accessory and you'll find a mix of people perfectly satisfied with the function of the device and people with devices for which it doesn't work at all. There's also a bunch of features with little caveats that confuse people wildly. Literally a few minutes ago my boss was puzzled as to why her USB-C Mini Displayport adapter wasn't working, and what we realized is that it was connected through a docking station with an HDMI port on it, and despite the fact that nothing was plugged into this port, it was still consuming the Displayport signal for the port and not passing it on to its children. Some of this stuff might be intuitive to someone who understands, but the average user doesn't know or really want to know why the port on the dock is different from the one on their computer even though they look the same.