Makes sense! Many consumers likely already have a USB-C charger, so splitting it up gives people flexibility. I will be interested to see how they communicate this to prevent first time iPhone users being left without a charging cable/power brick.
I would have agreed if you had said Micro-USB. I own tens of those with no USB-C charger in sight.
I don't use Apple products, but reducing waste like this is great. Most people should have buckets of chargers by now, and even if they lack the cable, it's better to buy when needed.