Data brokers have been harvesting this information for years.
This is a huge step forward for data privacy.
In no way am I going to be duped that Apple suddenly give a damn about anything other than protecting their investment.
> in many cases, that hack does not drive sustainable growth in the long term
Simple example, let's say the social platform knows you're into football. It has no information on whether your friends are into it, but if they see that you are mutual contacts they can try show football-related ads to your friends too and potentially get a boost in ad performance.