Yeah ... I don't think there's any overlap between "users largely unfamiliar with terminals" who want something easy to use, and 'Linux users who are sufficiently technical that they would even hear about this repo'.
There's no shortage of less technical people using nano for editing on Linux servers. Something even more approachable than that would have a user base.
Especially noting it's a single binary that's just 222kb on x86_64— that's an excellent candidate to become an "installed by default" thing on base systems. Vim and emacs are both far too large for that, and even vim-tiny is 1.3MB, while being considerably more hostile to a non-technical user than even vim is.
I can definitely see msedit having a useful place.