The default has never changed from the point of view of the user. The default is "don't steal my data". DNT was just reflecting the reality of the situation: user not making a choice indicates they don't want you to steal their data.
> DNT was just reflecting the reality of the situation: user not making a choice indicates they don't want you to steal their data.
Advertisers don't need a header telling them what they should do by default. They can get that information from elsewhere. DNT was going to be a way to opt-out, and some advertisers promised to listen to that. Setting DNT without user action removes the "opt".
