A study doesn't mean the authors were surprised necessarily. It's a way to test a theory and take down the results. It makes something that might have been hearsay into a more solid form.

Llm is mimicing data it was trained on. Put in bigot, get bigot. There is a lesson in there

These norms you are talking about is just a fake veneer to justify the oppression.

Look we are civilized no racism, see, now get back to work, peasant.