Many things are wrong probably, here are some I can think of: it is extra data for more accurate fingerprinting, it is not really an alternative to tracking use

Many things are wrong probably, here are some I can think of: it is extra data for more accurate fingerprinting, it is not really an alternative to tracking users because companies using it doesn't mean they'll stop tracking you, it's likely going to become another de facto web standard imposed by Google and used in conjunction with other tracking methods may more accurately reveal your browsing habits and history because it reduces the guess/search space from the whole web to a handful of websites in your cohort.