Why wtf?
Microsoft started as a UNIX-based programming company. https://en.wikipedia.org/wiki/Xenix
Hell you see remnants of it in the reserved filename list.
https://learn.microsoft.com/en-us/windows/win32/fileio/naming-a-file?redirectedfrom=MSDN
Devices in windows are not typically "files" like they are in unix/linux... So why CON, PRN, AUX, NUL, COM0, COM1, COM2, COM3, COM4, COM5, COM6, COM7, COM8, COM9, COM¹, COM², COM³, LPT0, LPT1, LPT2, LPT3, LPT4, LPT5, LPT6, LPT7, LPT8, LPT9, LPT¹, LPT², and LPT³ are all reserved? Because they maintained compatibility with features businesses used at the time... and never deprecated the function.
Edit:

Why are we downvoting literal computer history? It is a known fact that Windows started on Unix systems. It's a known fact that they released their own BSD-based software up to and including a full fledged Unix-based OS, and it's a known fact that MS-DOS 1 and 2 were both Unix compatible. This is LITERALLY the definition of "roots". Are we so touchy here that we can't acknowledge actual computing history?