Facebook mad at Apple for introducing new privacy control features will allow users to opt out. Facebook says that will cost them advertising revenue especially if Facebook is on Apple platform or device. The feud has been escalating since this was announced.
https://apnews.com/article/apple-crackdown-iphone-user-tracking-4d6ea62d0adaf16413988ec6b35a13a8
https://apnews.com/article/apple-crackdown-iphone-user-tracking-4d6ea62d0adaf16413988ec6b35a13a8