> I can’t understand it. Can anyone?

Sciences are ruled by their real-world applications.

The main real-world application of anthropology is justifying or condemning racism, nationalism, colonialism etc. So that's what it delivers most of the time (which one depends on the demand).

This isn't new BTW - for most of our history the conclusion was given (for example "god made it so") and scientists were only tasked with getting to the conclusion in a persuasive and flavorful manner.

Everything but the few "hard" sciences is going back to the scholastic ways step by step.