Blub was about productivity features for building products, i.e. writing software faster, not arbitrary features. A decent type system in terms of productivity

Blub was about productivity features for building products, i.e. writing software faster, not arbitrary features. A decent type system in terms of productivity is certainly not Haskell, they cannot look down on anyone. So the argument is still valid. But sure, sometimes it could be Haskell, but I doubt it, it's probably always faster to not use it, even if you have to come up with a DSL.