Comment by charcircuit

This does not make sense to support. Businesses that have proper privacy controls and security do not want to be lumped together with random shady apps and want users to explicitly opt out. Another issue with this header is that users could set it and then accidentally opt out of other sharing that they don't realize since this header is being set somewhere random. Standardizing on a per app basis way to revoke consent, along with showing privacy polices and measures the apps have put in place for guarding security would be a more sensible alternative that could gain traction.