Of course, not in a "we should generate and spread racist content" kind of way. But sometimes results are a caricature of all the stuff AI has ingested, so if its output is obviously biased, it might be a good indicator of particular ways people tend to be biased.

For example, if all of the AI-generated images for "doctor" are men, it's pretty clear the source content is biased to indicate that doctors are/should be men. It would be a lot harder to look up all of the internet's images of "doctor" to check for bias. There are probably a lot more nuanced cases where AI-generated content can make bias more apparent.