Most likely not. I think all the big players have been using more traditional ML approaches for years. Then again someone new might go there and fail miserably.
This is an industry that evolves extremely slowly. A decade back one of the big players in this space was still using a software emulation of their original hardware relay logic, because it was cheaper than retraining all the technicians...
It is just the reality that LLMs are not superior for this purpose. They are most likely very much inferior. There is no need to use language models for something that involve no language.
I feel weirded each time LLMs are suggested for anything as some sort of holy solution for every single problem. Robot surgery let LLM control it. Robots cooking LLMs. Nuclear power plants and oil refineries LLMs... Industry has find a sledge hammer and now everything is a nail...
