Saner people did prevail at Apple. That's why for a laptop that typically lasts 5+ years they went with USB-C to replace the other dozen antiquated ports.
A single-connector world is not an end in itself. The reason anyone finds it appealing is because it means people won't have to carry a forest of adapters and connectors, or worry about incompatible devices.
But that's what Apple is now forcing us to do if we buy their new laptop. USB-A is going to be around for years to come, as is HDMI. I'm not going to throw out my extremely expensive Thunderbolt display because it uses a heretical connector. I am not going to refuse to speak at a conference because the projector doesn't work with my new machine.
The basic requirement of a professional machine is that it let us get our work done. This is just design wank.