Some Websites use Dnt and we know the discussion about cookie banners. We heared arguments that those are necessary to be GDPR conform. There always was the argument to establish, that sites have to respect the state of the art information 'Do not trackt' to illiminate the annoying cookie process. Now this Option is gone.

Not so smart.
And being tracked by this header? Simply activated it be default, Mozilla and there are enough users sharing the same configuration.