Nothing stops us from using specialized tools in this case. They just need to not work on "single source of truth" of their respected domain, but on a projection of a single artifact into relevant dimension. Devil's in the details, of course, but at least with IDEs I can tell with certainty, based on my experience, that sticking to editing directly the single source of truth plaintext codebase is wasting much more time and cognitive effort than IDEs are saving us.