DSLs serve an important purpose but the entire thread is about general purpose Turing complete languages. DSLs fail very quickly as soon as you need to leave the domain which can easily result in needing many many DSLs for a given project which has other forms of complexity and sources of bugs that easily arise from such an approach (and that’s assuming you can just cobble together DSLs), not the least of which that proprietary DSLs and languages quickly become difficult to hire for and maintain long term. And DSLs more specifically suffer from the domains they can solve. WUFFs is a notable exception that proves the rule just because format parsing is very well studied and has very sharp edges on the things you need to support / accomplish.