It goes to the question of motive, which is relevant to the discussion, generally.
The non-dark pattern here is to say "Ad Tracking - On/Off".
http://www.theverge.com/2013/8/29/4640308/dark-patterns-insi...
BTW, Google lets you opt out of Interest Based Advertising: https://support.google.com/ads/answer/2662922?hl=en