However, most of the industry has moved away from DSLs. Whilst having a unique language can make certain things more expressive, having something standard makes mistakes happen less, and increases the effectiveness of a programmer. Lisp doesn't rule our day to day.

We shoehorn things that feel like, but are structurally different, to DSLs into config files and the like, using JSON/YAML/etc in rough ways, because DSLs introduce a cognitive overhead that doesn't need to be there.

That the shoehorn happens, does mean that DSLs are something natural to reach for. You're right there. But that we have moved away, as an industry, indicates that using any kind of DSL is a smell. That there probably is a better way to do it.

Having a core language feature using a DSL, is a smell. It could be done better.