True. If you have to sell with a cheap single voltage power adapter (instead of selling either completely without or with a more expensive USB PD one), you should at least have both inputs, the custom DC socket for your cheap wall-wart and a USB PD client for when the user wants to slim down the size of their power adapter zoo.

That's why I'm surprised they only include one USB-C port. If you use that for power input can't use it for anything else. I expect machines released in 2023 to have at least two especially if it supports USB-C power input.