I can't say I understand the formula in the article, but I have interacted with emacs/vim and VS Code to some degree. I've also use several other IDEAS (Eclipse

I can't say I understand the formula in the article, but I have interacted with emacs/vim and VS Code to some degree. I've also use several other IDEAS (Eclipse, NetBeans, IntelliJ, etc) and I have to say except for special circumstances (Java or C# like languages), the fact that I can easily navigate code via the keyboard and have multiple onscreen views into multiple files pushed the older editors far to the head of the pack for me. Unless there's some other compelling reason to use an IDE I very quickly dismiss an editing tool in favor of vim these days because of that multi-window/ view aspect. I don't need most of the other things wasting real-estate on screen and hate having to bounce back and forth between files if I can see the parts I need at the same time. It just flows better. If a tool can't give me at least a 2x2 grid of views into source files, I'll probably drop it without looking much further ...