There is an LLM acting as a component in a larger system. But that larger system is not an LLM. Calling it an "AI" is indeed an act of marketing as there is no learning / adjustment as we would expect from an intelligence, but calling it an LLM seems to be inaccurate. So what is it?
Again, this is literally the name of the field (and the tech). It's been around longer than you and probably your parents.
Dartmouth workshop (1956):
https://en.wikipedia.org/wiki/Dartmouth_workshop
Random dusty undergrad textbook from the early 70s:
https://m.media-amazon.com/images/I/816fxHVJkHL._SL1500_.jpg
>there is no learning...
If human-like continual learning is suddenly the standard, you can just as easily say that terms like machine learning and deep learning are an "act of marketing".
"every aspect of learning or any other feature of intelligence can in principle be so precisely described that a machine can be made to simulate it."
Clue: If you put a pig in a poke, is it still a pig?