In general a "hypothetical person" probably isn't going to be a big fan of any one technology, platform, language, etc.

There are too many choices and everything is fragmented to the point that it's hard to find any common ground between ruby developers, js / jquery developers, old school c++ hackers, bash-scripting sysadmins and even perl gurus.

Emacs definitely isn't the most popular editor I've ever used though. When someone asks me why I use it, I usually give a short one minute demo where I macro a bunch of changes, show git integration, multiple buffers, and use some pre/post save hooks. Few editors come close to matching Emacs feature set.