Do Not Track: Are Weak Protections Worse Than None At All? - Electronic Frontier Foundation

This was obvious from the outset. DNT was the minimal necessary for an overly invasive industry to say they are complying with privacy requirements while knowing that it would have no impact on them at all.

With a weak DNT standard in hand, advertising industry players will be able to signal to legislators and regulators that they have solved the privacy problems related to online tracking, but will have little incentive to depart significantly from the status quo.