Then we'll have to agree to disagree. I've run several hundred presentations over HDMI with the dongle that I have and have been able to do several hundred more

Then we'll have to agree to disagree. I've run several hundred presentations over HDMI with the dongle that I have and have been able to do several hundred more via VGA, DVI, etc. without that. Other than that, I don't have 5 dongles. All my devices and cables are USB-C now and it's of great benefit to me that I can be flexible and plug them in anywhere, chain them, get power from them, and essentially run them all off of 1 hub that only takes 1 cable to the computer. For me, USB-C is amazing.