We designers must reasonably but seriously convey the user-hostility of these patterns to higher-ups at every available opportunity. Sure, you'll get overruled by the dollar-focused Jr. Marketing Exec. On the other hand, the folks who say things like "Refuse! It's a designers job to say no!" probably have much bigger savings accounts than I and most others do... but not saying anything implies consent, and that's whe…
Personally I'd refuse to add a dark pattern cookie dialog, but I'm in the privileged position of being able to switch jobs.
But regardless, I'd probably send the ethics hotline an email saying that regulations are violated. Perhaps I'd send an email to the relevant regulator too, just in case.