Yes, Excel “runs the world”, and in most organizations, you’ll find a fairly narrow slice of Excel power users that build and maintain the Excel that “runs the world”.

We may not call them developers or programmers (or we might; I’ve been one of them as a fraction of my job at different times, both as a “fiscal analyst” by working title and as a “programmer analyst” by title), but effectively that's what they are, developers using (and possibly exclusively comfortable with) Excel as a platform.