At its root, advertising is attempting to predict an individual's preferences and subtlety nudge their preferences toward specific buying behaviors.
With more granular and pervasive data inputs, you can arguably do better predictions and thus better targeting.
The only counter to this is either:
1: proof that more individual data /= better ad targeting as DDG is attempting to do
Or
2. Changing the default business model for internet companies
Surveillance capitalism is a natural result of our form of consumption driven economy.
The most interesting thing here actually is that there's an argument to be made that this is also a good approach to building very complex artificial intelligence, effectively aggregating how people respond to input.