Assuming the anonymization holds up, they can profile a person, but not link it back to you. This determines whether the information can be used to invade your

Assuming the anonymization holds up, they can profile a person, but not link it back to you. This determines whether the information can be used to invade your personal life, blackmail you etc. This is a critical distinction, whether privacy means not having information collected at all, or being protected from having your data used against you. Personally I believe there is a middle ground, but it needs stronger protections, due to the incentives always pointing to greater exploitation of our data.