The clues were right in front of us.
Didn’t “My Computer” exist since like Windows 95 or so?
Also back when it was first introduced I heard some explanation that people were expected to rename it using their actual name. So something like “Joe’s Computer.” Though I don’t think anyone really did that in practice, which just resulted in everyone always having the “My Computer” icon on their windows desktop and it became the norm.
sysdm.cpl. Classic Windows.