That’s not a feature of targeting, but of declining audience. There’s enough injured people watching TV in waiting rooms that structured settlement ads have a ROI.

The reality is that you could easily segment the tv audience in the 80s and 90s. There was a time when dudes would tune into Wheel of Fortune to gawk at Vanna White. CNN once attracted a high end audience.

Likewise, the ads on the Spider-Man Saturday cartoon, GI-Joe, Dr Quinn Medicine Woman, and Nightline were very different, and targeted by age.