File from Microsoft Xandr shows the many ways advertisers label people

see The Space Merchants (1952)

Bernays (IIRC) goes into detail about how detailed segmentation (a century ago, they had to hand-craft theirs, often with the help of push polling) is useful to "triangulate" a targeted segment by saturating neighbouring segments (pre-astroturf astroturfing).

For ad buyers this is a great marketing piece. I would predict an uptick in new ad buyers after seeing the article