Adding on to this, the one scenario where it matters is if you buy a new USB-C to Lightning cable, that lets you travel with just the MBP's USB-C power brick. T

Adding on to this, the one scenario where it matters is if you buy a new USB-C to Lightning cable, that lets you travel with just the MBP's USB-C power brick. To charge the computer you plug it in. To charge the phone you plug it in. To charge both you plug the computer in and then plug the phone into the computer, since it's all the same port. If you still had USB-A on the computer, you could potentially have traveled with only a laptop power supply, and then charged the phone via the laptop ports with the original cable. But I don't know anyone who travels without a phone charger thinking "eh, I'll just plug this into my computer to charge instead."