While I certainly like parentheses highlighting and rainbow parentheses, I've programmed Clojure without syntax highlighting and while it’s not as nice as it would be with, it’s fine.

I’ve also written C++ and Java in Notepad long ago. Not ideal, but hardly a problem.

Not everyone is a "coder" you know, some of us are engineers.

You adjust pretty quickly. Taking away compiler error messages would be fun though.