I think QC is overhyped nonsense just as Artificial Intelligence is.

Many companies use AI for customer for example Amazon, Google, Microsoft, all use AI for customer service chat and phone support.

I have probably used these AI bots hundreds of times for various customer service issues over the phone or through chat and I can't remember a single time they were able to actually answer a single question and solve my problem no matter how simple it was. Where as a human would have resolved it in within seconds or minutes.

100% of the time the AI voice or chatbot ended up directing me to a real person because it said it couldn't understood my question that any 12 year old human would have understood.