You forget the step of installation though. My mum would be totally able to use Linux but creating an installer usb is probably beyond her capability or at least her comfort zone, let alone opening the bios, setting the usb as boot drive, disabling secure boot, and then installing Linux correctly. Although to be fair, the last step is probably the easiest. That’s why you still have to set it up for non tech savvy ppl. Sure, not much different with windows, but usually it comes preinstalled.