They might not be, and their use-case might not be one I agree with. I can just imagine a plausible reality where they made a reasonable decision given the incentives and constraints, and I default to that.
I'm basically inferring how this would go down in the context I worked under, not the GP, because I don't know the details of their real context.
I think I'm seeing where I'm not being as clear as I could, though.
I'm talking about the lifecycle of a methodology for categorizing calls, regardless of whether or not it's a human categorizing them or a machine.
If your call center agent is writing summaries and categorizing their own calls, you still typically have a QA department of humans that listen to a random sample of full calls for any given agent on a schedule to verify that your human classifiers are accurately tagging calls. The QA agents will typically listen to them at like 4x speed or more, but mostly they're just sampling and validating the sample.
The same goes for _any_ automated process you want to apply at scale. You run it in parallel to your existing methodology and you randomly sample classified calls, verifying that the results were correct and you _also_ compare the overall results of the new method to the existing one, because you know how accurate the existing method is.
But you don't do that for _every_ call.
You find a new methodology you think is worth trying and you trial it to validate the results. You compare the cost and accuracy of that method against the cost and accuracy of the old one. And you absolutely would often have a real human listen to full calls, just not _all_ of them.
In that respect, LLMs aren't particularly special. They're just a function that takes a call and returns some categories and metadata. You compare that to the output of your existing function.
But it's all part of the: New tech consideration? -> Set up conditions to validate quantitatively -> run trials -> measure -> compare -> decide
Then on a schedule you go back and do another analysis to make sure your methodology is still providing the accuracy you need it to, even if you haven't change anything