I can imagine having to take a picture of yourself and email it to "ClassActionPrevention@facebookphone.com" to e-sign the new EULA every week before you can make a phone call.
Facebook was never capable to provide a decent client for Android or iOS. It's slow, buggy, messy and limited. Do I think Facebook can design or customize an OS ??? Yes, modifying an Android to make it display useless adds here and there must be easy, but who needs their crap ? Not me !