"better" for whom? The key issue raised by the parent post is that from whatever sources the robot learns, we should expect it to be trained to use that data to make things better at achieving the goals of the robot owner which are different from - and often opposite to - the goals of the customer.

So yes, in comparison to a static robot flow or a human following a script, a robot that learns from past calls would be better... at maximizing the chances that the caller gives up in frustration while still having their insurance claim denied.