The ability install “arbitrary software without restriction” is what defines a PC? Now that is complete and utter horseshit. A Chromebook isn’t a PC? A laptop with account restrictions to prevent the end user from installing software isn’t a PC? A desktop running an immutable linux distro isn’t a PC? Quit your bullshit. A PC is a computing device with a CPU and Memory, meant to be used by several people or less at a time, everything else is superfluous.