Whether GDScript is a DSL is arguable; a game engine scripting language falls in the interesting middle ground between a special purpose DSL with a limited scope (e.g. awk) and a general-purpose programming language with tacked-on frameworks (e.g. C++ and DirectX).

There are important assumptions and specializations (e.g. the engine-managed game loop and attaching scripts to nodes) but also a large variety of use cases (for example both low effort and high performance graphics)