Not to mention that the carrier is probably tracking you as well. And all the websites that you visit. And possibly your government.
Seems there's no such thing as privacy any more. Kind of sad to see Apple budge on this as they've generally been one of the few companies that leaned more towards user privacy.
Also, the opt-out method described in the linked article is different from
Apple's listed method. However, the article I've linked covers iAd (Apple's app advertising platform) which may be different from what the BI article is talking about. Also, I wouldn't call it that tricky to opt out as it's a pretty simple process. The only tricky part is that the opt-out setting isn't where one would expect it to be.