The people who compared the USB-C move to Apple's past moves were completely ignoring that in the past Apple replaced the FLoppy drive with the CD rom, but still kept all the other ports around.

This time round Apple has replaced every port with a USB-C port, which means I don't need to transition only 1 interface. I need to transition all.

And the most painful part about this move is they are doing it to the product line that in the past was loved because it came with USB + FW400 + FW800 + Video + Magsafe. IOW, a design goal for the Pro line used to be easy compatibility so professionals could end up in any situation and have a great chance of getting their computers to work with their environment without any adapters.