the article discusses when the ISP/telco sells the data that you have zero visibility on. there's no way to get around this.
btw, apple and google ad spyware process (google play service) will collect gps and wifi data without any user visible UI, not to mention download ads in the background.
Would be nice to see actual proof of this. I am very familiar with all network traffic an iOS device may emit and do not know what you are referring to here.