If you're not able to connect to a NAS for some reason, that's almost definitely on you or your friend in this case. But even that aside, expecting a one to one transition has always felt odd to me... You don't switch from an Android device to an iOS device or vice versa with the expectation of everything working one to one. You usually understand that there's a lot of differences involved.
There's ofc things like VR that I will admit Linux is quite far behind in, but for general use, Linux is problem-free for the most part these days. And you definitely don't end up having an unbootable system pretty much ever unless you intentionally fuck it up. Like yeah, Linux lets me uninstall the kernel or bootloader if i choose to do that (it will try to warn me ofc) and that would render the system unbootable. But that would be me being irredeemably stupid, not the operating system's fault. Hell, some distros like Tumbleweed even come with a better snapshotting setup than both Windows and macOS, making it pretty much impossible to fuck it up that badly.