> Would you say that ML isn't a successful discipline? ML is basically balancing between "formal language" (papers/algorithms) and "non-deterministic outcomes" (weights/inference) yet it seems useful in a wide range of applications

Usefulness of LLMs has yet to be proven. So far there is more marketing in it than actual, real world results. Especially comparing to civil and mechanical engineering, maths, electrical engineering and plethora of disciplines and methods that bring real world results.