Words are squishy. OP getting a negative reaction to me is silly because it takes multiple assumptions to take that negatively.
I took their words to mean "LLMs can go off the rails and do things you didn't ask". This is 100% true. The other day I asked an LLM to review my PR. It ended up committing code to fix a supposed issue my coworker commented about. At no point did anyone ask for anything but a review, never for it to make changes.
I got no impression that OP thinks LLMs are running wild on their own now. I just got that they think they are unpredictable. Which is true.