Common Reinforcement learning methods definitely are.
LLMs are an evolution of a markov chain as any method that is not a markov chain... I would say not directly. Clearly they share concepts as any method to simulate stochastic processes, and LLMs definitely are more recent than markov processes. Then anyone can decide the inspirations.
What I wanted to say is that, really, we are discussing about a unique new method for LLMs, that is not just "old stuff, more data".
This is my main point.