Out of curiosity, do you hold AdSense to the same standard? After all, a pixel and a cookie on 70% of websites by hit is being used to infer your interests, location, demographics, and purchasing history, all so ads can be better targeted at you. Why is it more shady for Facebook to do this with information you explicitly provided, under terms that Facebook disclosed, than for Google to do so with 99.9% of the web having no idea it's happening?
Sorry, I forgot: it's not evil when Google does it.