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Something which some people miss is that it is not simply that Facebook uses people's data in one way or another.
Facebook is the ultimate data hog. For the profiles, they want your name, they want your phone number, they want your location, they want to know where you work, they want everything.
It is designed such that there is always an excuse for them to ask for more data from you. It might be "convenient" in some way.
#privacy
It's not like Facebook is Linkedin (I'm not arguing that Linkedin *should* have more info), why do they need to know where someone works? (And it'd be concerning if they were because that is blurring personal / professional boundaries).
If someone who knows you wants to know that, they can just ask you.