I just came across a situation where I had a DSL but it was clear that a language would have been better. What I don't like about this is the dogmatic tone which is pretty common in IT. Don't to it that way, do it my way! Sometimes a DSL is a solid choice, sometimes a language is a better one, sometimes you might want to support both but I guess "Choose the right abstraction for your domain" doesn't make for a clickbait title.