[qwerty456127]

> The mechanism serves as an automated means for users to give or refuse consent

There already is the do-not-track flag, why not just force everybody to respect it?

[M2Ys4U]

There are a couple of reasons.

DNT is primarily about tracking, this new spec is more general and covers much more processing of personal data, and allows one to opt-in (or out) of specific instances of processing of specific (categories) of data.