My attention was drawn to the fact that facebook advertisers chose their target audience, such as "females between the age of 18-35". https://www.facebook.com/business/ads

This may be a non AI related categorisation or bias. (I don't know how they come up with these categories.)

However, the news feed is still optimised by a recommendation algorithm. But it's important to distinguish between the two methods.

I do NLP research, code, sing and sometimes write blog posts.