Umm, based on the content of the article, no, Facebook did NOT advertiser access to your shadow contact information. Advertisers can specifically say that they

Umm, based on the content of the article, no, Facebook did NOT advertiser access to your shadow contact information. Advertisers can specifically say that they want to advertise to a phone number THAT THEY ALREADY HAVE, (READ: THE ADVERTISER ALREADY KNOW WHO YOU ARE). And Facebook will display that ads to the Facebook account that use that phone number in their shadow contact info. At no point does advertiser have access to which Facebook account that is.