I do not like tracking at all.
But I think this is something which needs to be handled by governments (laws/regulations) not by apple forcing their opinion about what is right onto everyone else by abusing their marked positions.
In this case it might be beneficial for the users.
In others cases it was not beneficial for the users at all but only for apple. Like if I remember correctly apps where not allowed to state that they are Pebble compatible because Pebble did compete with the Apple Watch at least theoretically, similar platforms like Netflix/Amazon Prime got special terms wrt. the pay cut but a Netflix/Amazon Prime for gaming wasn't allowed at all for dubious reasons (with that reasons any content gateway like browsers, newsfeeds, Netflix etc. would not be allowed) oh and guess what it seems Apple is currently working on their own Gaming/Game Streaming platform...
So yes anti tracking is good. But I still belive Apple is again abusing their monopoly like positions for their own benefits, let's not forget Apple has their own app network which likely isn't affected by this.