I first saw this talk of DSLs with Ruby, where it is/was popular to use missing method and others to build your own "language".

I do not mean it in a negative way, but at the time it seemed like calling a utility class DSL was excessive. It just seemed like regular programming, using the language constructs. It also was not enforcing many boundaries (there are escape hatches).

Looking at all of this, would it not be easier to encode the DSL in something like json, and turn it into a data/format problem? Something like terraform. The implementation can then be in any language that can read json. One could imagine, for example, regex defined in json as a DSL.