Earlier quoted context omitted.
You can make it look modern: get rid of all menus and bars so that there is nothing on screen except for the text you're editing. (e.g. search for minimal.el) It looks indistinguishable from any other modern editor / IDE in zen mode. Menus and bars are not necessary in these sorts of applications if you use then daily -- more efficient and powerful to use the command palette and key bindings.
> nothing on screen except for the text you're editing Just wanted to clarify, to me that's timeless. Modern would be having modern menus, pop-up configuration screen et al.. All the candy that appeals to a less experienced user, who worked with Idea, Sublime of VS code before.
There's a reason there's no beginner car, no beginner guitar, and no beginner drill. Those are either tools or toys. If all you want is to type some text, notepad (or the equivalent in other OS) is enough. But programmers do more with text. So they should know what tools provide those and how to use those tools. But then you'll find a lot of programmers barely go one level up from notepad with their tools.