Had the iPhone 7 switched from Lightning to USB-C, this would kind of make sense. Put USB-C ports on the laptops and now all accessories (chargers, headphones, displays, Thunderbolt, USB devices, etc.) could use the same port across all devices. But with the iP7 using Lightning, losing the Macbook headphone jack would really suck. You couldn't use Lightning headphones on the Macbook without an additional USB-C to Lightning female dongle (on top of your USB-C to Lightning male for charging your phone, USB-C to USB-A dongle(s) for regular USB devices like flash drives, USB-C to HDMI dongle for displays, etc.), and to use regular stereo jack headphones on both devices would require carrying 2 dongles. Most wireless headphones only pair to one device at a time so it would be super inconvenient to use the same wireless headphones on two devices.