I don't have to mention that it's simply illegal, yet...
You're talking about mixing data, like you have to know that someone under 18 was pregnant and for how many days, as well as that a specific man was her father and soon to be grandfather, all because some advertiser wanted to surprise grandfathers after their grandchildren was born - if the advertiser has access to this amount of data granularity, it might just know that she aborted anyway either because she searched for some symptoms that had strong correlation with abortion, or because she vented about it in some forum.
Sorry to have distorted the truth. The AD still revealed to a father that his daughter was pregnant. AFAIC this is relevant to the OP question about why ads should sometime refrain to "target"
I don't have to mention that it's simply illegal, yet...
You're talking about mixing data, like you have to know that someone under 18 was pregnant and for how many days, as well as that a specific man was her father and soon to be grandfather, all because some advertiser wanted to surprise grandfathers after their grandchildren was born - if the advertiser has access to this amount of data granularity, it might just know that she aborted anyway either because she searched for some symptoms that had strong correlation with abortion, or because she vented about it in some forum.