The fact that this makes behavioural targeting even harder makes me very happy. What makes me even more happy is that this helps to eliminate the argument stat

The fact that this makes behavioural targeting even harder makes me very happy. What makes me even more happy is that this helps to eliminate the argument stating that 3p cookies can be replaced with heuristics/non-deterministic targeting. So, instead of assigning resources to just another way of targeting users (e.g. hacks, fingerprinting) a developer/PM can already say that these approaches will be prevented in the exact same way. Any further work in this direction would be pointless. Ideally, we'd put more focus on contextual targeting, which is arguably more useful, significantly less creepy and less dubious from the ethical point of view. I just wish Microsoft moved in the same direction with IE. So far they've been more quiet on that subject than Google. That's wishful thinking, I know.