IIRC the argument was that DNT being enabled by default in a browser made its "advisory" nature to the server on the other end even more toothless, because it c

IIRC the argument was that DNT being enabled by default in a browser made its "advisory" nature to the server on the other end even more toothless, because it could be argued that for the majority of users with it enabled, it would not be a signal of any actual decision on their part.