He may have been trying to install it on a potato or on something atypical. I struggled to get a clean Windows 10 install on a system with an old ASUS motherboard using its RAID controller and AHCI. Support didn’t seem to understand the problem, but they were a good sounding board while I figured it out over 3 evenings. By contrast, Windows 11 took all of 10 minutes to install with Rufus on a modern system. Sometimes you just end up with a system configuration that isn’t quite supported out of the box by a given OS, and it takes some third party drivers and some intermediary configurations to get things to load before you can get things working properly.
Nice.