The issue is that a good DSL shouldn't be a "language", it should be a tool, a textual UI that is designed by and for power users for a particular task. When you are doing something 500 times a day you want a hyper efficient tool to accomplish that. Learning curve is irrelevant, only efficiency and expressibility. A DSL is a great fit. If you are doing some task once a month you just want something simple you can wrap your head around quickly. The problem is that the former often forget that the latter exists and so recommend their workflow to everyone, forgetting they have different needs. But both sets of needs are valid.