If it's mostly marketing, why was Facebook so up in arms about forced opt-in for tracking in iOS?

Because Apple blocks everybody else from spying on you but Apple themselves are still perfectly spying on you. And not just that, by disallowing all other apps to get their hands on your data you even tell Apple which data it can sell for a higher price because it's only available via Apple and noons else...

Let that sink in.

▲

joshstrange a day ago | parent [-]

Let what sink in? Your completely unprovable/unproven conspiracy theory?

You are suggesting that Apple is actively tracking you in other apps (apps that aren’t allowed to track you themselves). I find that completely preposterous and a huge risk for Apple to take given their marketing.

> Because Apple blocks everybody else from spying on you but Apple themselves are still perfectly spying on you.

Extraordinary claims require extraordinary evidence. Specifically Apple spying on users and collecting info tied to their identities in 3rd party apps.

	▲	oefrha a day ago \| parent \| next [-]
		You mean extraordinary evidence like selling Apple Ads and associated attribution data that third parties aren't allowed to collect? Their ads revenue is now $10B+ and growing. You must know nothing about the mobile measurement industry if you think this very mundane claim is some extraordinary conspiracy theory; it's not even controversial there. https://ads.apple.com/app-store/help/attribution/0093-adattr...
	▲	Grimeton a day ago \| parent \| prev [-]
		I never said they monitor you in 3rd party apps. Don't put words into my mouth. https://www.apple.com/privacy/labels/