I guess it's someone who worked at Microsoft in the late 80s/early 90s:

https://en.wikipedia.org/wiki/MS-DOS_Editor

I vividly remember using edit on an Windows XP (or was it a 98?) when I was a kid. It was one of those hidden commands that I learned while watching my uncles and father do trickery in CMD

Edit: just read https://devblogs.microsoft.com/commandline/edit-is-now-open-... and it seems that all 32bit windows versions had edit. I was probably using Windows XP 32 the last time I remember using edit