It's a shame we don't get a charger with the drone, but
I think the choice for them wasn't between including a USB charger or not.
It was between
*having no charger but using a standard like USB-C
or
*like almost all of their previous drones using a proprietary charger.
I was kind of pleased when I found that the disco had a standard connector at least, I can charge it with a generic lipo charger, and do standard things like discharge a battery, or log charging with DataExplorer and see the balance for things, stuff you can't do with their included charger.
With the Anafi I have the choice now between using the Anker charger I bought specifically to charge it, or the USB battery pack I take camping, or using my macbook pro's USB-C charger, or I guess I could even sacrifice some charge from the macbook itself to charge it, or if I'm not in a hurry charge it from any one of the 30-40 USB-A ports I have scattered all over the place.
Sure it's a pain when you have a USB-C device that doesn't do PD, but it'll charge still most of the time, and USB-C is quickly becoming the favored port for new devices. If apple switches over to usb-c for iphones as they did with the ipad, that's nearly half of people buying a new phone getting a USB-C charger too. Seems like all the Android phone manufacturers are already on board. If wireless charging doesn't supplant it right away, over the next year or so you're going to find that pretty much everyone has a USB-C charger of one kind or another in the house.