If it's limited to traditional customer service roles (which aren't allowed to deviate from a script), I honestly don't understand how this would be any more unethical or creepy than it already was to begin with. The experience is a lot like interacting with an LLM chatbot today, except somehow even more creepy because you know it's a human behind the phone.
I don't really have a stake in this because I know customer service is going in the shitter either way. But I do find it interesting how people perceive the progression.