These things act like people. Yes, of course, it is impossible to tell if they actually have feelings or whether they pretend to have feelings.

But that is entirely irrelevant to the core issue - how do you want the thing to behave? And the truth is - we have absolutely no language to express how we want a non-sentient entity to behave without anthropomorphizing.

Or - you tell me - how would you instruct an LLM to behave in this situation without using personification?

And, again, it's irrelevant - except to those people who are terrified of accidentally personifying them. Do they have feelings or are they faking? DOES NOT MATTER. We use them - we need to adjust them - we use the most convenient language to do so. What precisely is so upsetting about that?