It's not "just" greasing the wheels, because previously each call required a human being to spend the equivalent amount of time on the phone with a victim, interacting with them - you couldn't just play a cassette tape at them, you know?

And it likely requires working with other people, your "employees", who are both a liability, and a cost.

With AI, you can make a thousand calls in parallel, for significantly cheaper, out of your own basement.

This greases the wheels of voice fraud like a gatling gun greases the wheels of hitting a guy with a rock.