I don't often donate, but i feel like this is a very good cause; I'm often frustrated by the privacy abuse of big tech, yet at the same time i can't stop using its products because there are no proper alternatives (i believe it's called "oligopoly"...)
So, this way i hope to help support restoring the balance, even if it's just a small donation.
So, this is what Schrems is after, but it will happen with or without their action.
If Apple breaks the rules by placing "cookies" without user consent/knowledge, they may need to be fined.
Whether they may or may not stop abusing the rules in the future, is a secondary issue.
That's already in progress and in this case it's pretty much about the exact same practice on Apple platforms.
(Also please note how iOS 14 has a separate switch for Apple Ads tracking identifier which is ON by default.)
They argue that with the planned changes, Apple still creates a IDFA, and while it will allow users to restrict other apps from using it, Apple itself still can. Additionally they want users to be able to have no IDFA at all.