When one takes a step back, it’s obvious that our own societies have their own ingrained systemic biases. All our journalists and other writers will have biases that they and us might not even notice are biases, since we believe they’re just fact.
AI datasets have run into this problem plenty of times, for example when government regulation has told insurance companies not to use factors like ethnicity or races in certain calculations, but it turns out that some ended up indirectly doing it anyway since postal codes approximated race in many regions. There are layers to systemic biases.