DNT may be opt-out. But it should certainly be treated as "Don't even bother asking for consent to track, because I already told you the answer is no, and you'll be harrassing me by asking."

My argument is current laws did nothing to give teeth to DNT. I'm not worried about what the technological defaults are, but I would argue that without DNT being legitimized, it was dead on arrival. We have had it in browsers for ages, and we've dropped the ball on enforcing it for ages.

My other argument is, if you detect DNT, the cookie consent dialog shouldn't be shown at all.