I for once welcome these changes; if companies were not brave enough to let go of old ports to standarize the USB we'd be stuck in the old days with dozens of dongles. At the speed of USB-C adoption, in ~5 years I hope it's the most used port and in ~10-15 I hope not to need any other port for any peripheral.
I wrote a small article about USB-C adoption: https://techcrunch.com/2016/10/27/apples-new-macbook-pro-jus...