I have not experienced that, which is why I questioned the difficulty. I've installed Windows 10 on a good amount of machines at this point, bypassing the NRO during the install process, and have not had any issues that prevented me from installing software/games or just using it like a normal PC, even after connecting it to the Internet.

However, my experience may be dated. It's been awhile since I've had to freshly install Windows. Perhaps things have changed.