How many times has Apple done this in modern times? Remember the outrage when Apple removed floppy disk drives? Optical drives? Ethernet ports? Remember how mad everyone got when Apple replaced their old, thick connector on the iPhone 5? Nobody complains about how thin their phone is now that the old 30pin connector is no longer the limiting factor on size. Nobody is bemoaning the fact that they can't watch a DVD on their laptop - we've moved on from optical media.
Nobody will even bother examining the bellyaching about this in a couple of years because we'll all be so happy with the obvious (in hindsight) decision to switch to USB-C.