All you need to remember about Zuckerberg and Facebook from his quotes here:
Zuck: Yeah so if you ever need info about anyone at Harvard
Zuck: Just ask
Zuck: I have over 4,000 emails, pictures, addresses, SNS
Friend: What? How'd you manage that one?
Zuck: People just submitted it.
Zuck: I don't know why.
Zuck: They "trust me"
Zuck: Dumb fucks
I actually don't see anything particularly wrong there. If I were to set up a page asking for personal info, and a bunch of college students (supposedly more technologically informed people) were to give them to me, I'd consider them somewhat dumb as well. It's not that I'd do anything wrong with the data, but they didn't know that.
This doesn't mean I support him or Facebook; I certainly don't.
You say those who ask persuasively enough, but we only know they've given data to governments, they are legally obliged to do so. I wouldn't say that's the same in any way as giving it to friends.