First off, this isn't AI, it's machine learning.

> The idea of AI picking up the biases within the language texts it trained on may not sound like an earth-shattering revelation

That's an understatement.

> But the study helps put the nail in the coffin of the old argument about AI automatically being more objective than humans

Again, this isn't AI, and anyone with knowledge on the subject has always known that a traditional machine learning algorithm is only as good as its training data.

This also seems like a case where the researchers are simply unhappy with the results they received, rather than being able to show that the results are wrong.