In context the point being made is different from that you argue against and probably agrees with you. The context is that of "privacy" and the assertion is that advertisers are not concerned with individual person who a person is; rather the advertisers are interested in relatively non-private broad characteristics of targeted clusters of people. The author paints a relatively rosy picture of advertising based on the interests of an ad's targets instead of the discriminatory interests of the target-er but the concept still stands that on the whole the particulars of an individual are not germane to the business as currently conducted.

People say ‘privacy’ so often that one can lose sight of the fact that advertisers don’t care who you are - they just want to show ads to people that might be interested in them, and not to show ads to people who won’t be interested. They don’t want to ‘violate your privacy’ - they want to show diaper ads to parents, car ads to people who want a car and watch ads to rich people.