Next year, however, Apple will require apps to seek customer consent before the IDFA can be used in iOS 14 to track user behavior and preference across apps and websites for ad targeting purposes.
This is Facebook’s political/PR strategy on this issue: (1) to ask everyone to ignore the plain truth that Apple’s changes to IDFA tracking are for exactly the reason Apple states: to give users control over their own privacy; and (2) to claim that Apple’s actions aren’t hurting Facebook but instead are hurting “small businesses”.
The Facebook Audience Network allows mobile software developers to provide in-app advertisements targeted to users based on Facebook's data.Today, advertisers can use a unique device ID number called the IDFA to better target ads and estimate their effectiveness.
Mozilla is going so far as to launch a petition, hoping to get Apple to change an important iPhone default setting. Each iPhone that Apple sells comes with a unique ID (called an 'identifier for advertisers' or IDFA), which lets advertisers track the actions users take when they use apps.