This is interesting point. I think lot of people assume that training gathers new "metadata" based on the original data and ignore what the training optimises for which is direct copy of the input. Training a model results in a fancy copy paste (unless incentivised differently).

You're naive thinking that Blizzard wants to make something new and creative.

They're just milking current players and they even let people to bot and RMT. Without banning anybody.