For that the key is the privacy controls. We can argue about whether Facebook's privacy controls are good enough, whether they are selling our data, and so on. But that's got nothing to do with the Apple walled-garden comparison.
I can write a FB app and have it up in a jiffy, that's just not the case with Apple. And I will be so very very surprised if Facebook censors a dictionary app.
> I can write a FB app and have it up in a jiffy, that's just not the case with Apple
If FB doesn't like your app they'll have it down in a jiffy too. It's not nearly so clear cut as you make out. Their review process is just reactive instead of front-loaded.
What matters here isn't "Are Apple and Facebook soulless and oppressive corporations?" (I'd argue no, lots of people would argue yes; either way it's not important.) What matters is how each is treating its developers. Facebook is open to developers and their publications; Apple isn't.
I can write a FB app and have it up in a jiffy, that's just not the case with Apple. And I will be so very very surprised if Facebook censors a dictionary app.