I agree, even though it feels a bit icky. I'm sure Apple have their eye on that advertising money in some way but anything that damages Facebook is highly likely to be a net positive.
Giving the users the opportunity to make an educated decision feels the opposite of icky. This in itself is unambiguously good. Now, other aspects of Apple’s behaviour are less great, but let’s keep some perspective: asking for user consent should be the legal bare minimum.
EDIT: just to clarify, I 100% agree it's a great change, it's just that "right thing for the wrong reasons" situation. But it's a very good change and I hope it continues.
Oh, right. Sorry, I misread :)