No. LLMs are worse for customer experience than their predecessors: LLMs confabulate, and their language is so smooth that you often need expertise to catch them in it.
People call customer service because they don’t know what to do. It would be better for most customers to talk to a bot that they can catch making a mistake.
Recent example: https://bc.ctvnews.ca/air-canada-s-chatbot-gave-a-b-c-man-th...