Probably for the best. Social media is poison.

At some point they can just tell you to upload your contacts and drivers license via email or a web form if you want to use the app, WTF do you plan on doing then?

I'm really trying to help you understand why Google and Apple can't rely on OS-level caps and perms. If you don't understand how app devs can cheat you blind regardless of what system-level perms you set, you're clearly not an app dev. I can ID your device and send it encrypted back to my server. I can find your non-standard address book and read it off the user partition by nicely offering you a utility service like backup. It's gzipped and encrypted and sent back to my db and forget about your privacy. I can do a lot more on your ROM'ed android device than you expect, and I can do it all with permissions and a bit of social engineering.

Now just imagine what I can do with your grandma.