Installing an operating system is a process that’s full of potential to be very painful no matter what the operating system is. All 3 major operating systems do their best to make it as painless as possible, but if you stray from the happy path, it requires technical knowledge to fix that most people don’t have. So the bottom line is that the OS which can make deals with manufacturers to pre install their OS with confirmed working drivers will seem more user friendly than the OS you have to install yourself. If you gift a noob a System 76 laptop and ask them to install Windows on it, they’re gonna balk at you the same ways as they would if it’s the reverse.