Facebook seems to be one of the few apps that gets privacy right, only asking for permissions to certain things (e.g. camera and microphone) when you want to use say a video recording feature. Now what's the general trustworthiness of the company? That's hard to say for sure, but at least they're doing app permissions right.
It's partially Facebook doing it right, but not exactly noteworthy. iOS devs can proactively request permissions whenever, and tell you whatever useless reason they want, but that usually gets users to tap "Don't Allow" (and may get your app rejected by Apple.)
