It's cool you have found a workflow that works for you, but I don't think there are many people using JOE or (plain) vi to write software.
https://insights.stackoverflow.com/survey/2019#technology-_-...
I can't imagine working that way myself. I need syntax highlighting, code completion, and go to definition at the minimum. Another newer feature I like is spelling and grammar checking of code comments.
Edit: Have you given Sublime Text 3 a shot?
The breakdown of "All Respondents" (i.e. all programmers) into Web, Mobile, and SRE/DevOps is telling.
Let's just say that it's a big world. People programming Excel spreadsheets aren't using vi, either. I won't dispute that.
This is news to me. I use JOE and, occasionally, vi (sic). But when I use short variable names it's often because they're idiomatic and expressive. In C for example, i, j, n, src, buf, cp, etc.
Many moons ago I used IDEs. Eventually I tired of installing, configuring, and maintaining bespoke environments.
I'm confident I'm not alone.