The whole ongoing Thunderbolt display fiasco where there are two different kinds of adapter from USB-C to mini-DisplayPort, each of which supports a non-overlap

The whole ongoing Thunderbolt display fiasco where there are two different kinds of adapter from USB-C to mini-DisplayPort, each of which supports a non-overlapping set of monitors, is almost entirely Apple's fault though. They were the ones who decided to push Thunderbolt monitors using the mini-DP connectors, then chose to make and sell an adapter that didn't support actual DisplayPort.