It's not enough to examine software: if you don't trust the company, then anything they say or promise is worthless. Automatic updates can change anything, including the TOS! This is the same company that sells a 1984-Telescreen (XBox) with an always-on camera and microphone. _NSA shouldn't be forgotten.
Oracle likes to tout Java as GPL, but what does that matter when we know the company can't be trusted? Who controls a software project is the key, not the licenses or corporate promises. There's no point in trusting iOS because we've examined it, we also have to trust Apple.