[mpeg]

I don't think DNT settings were not considered – they were probably discarded as they hurt user privacy. Fingerprinting tools use the DNT setting as an extra flag to identify the user, so having it set to a non-default means you actually get tracked more, not less.

[bawolff]

The cookie banners still have to be implemented somehow. I dont think there is a difference in the amount of tracking here.

[mpeg]

My point is that if the tracking settings came from the browser whether it was DNT or another one, they would actually be used to track people more effectively by bad actors