Plenty of choices of Android builds that have no closed-source Google code whatsoever.
> I don't even have full comfort over everything running on my Android device. I have no way of knowing which companies can access the data on that device and the ways with which they can access it.
That has nothing whatsoever to do with the OS. You think just because it's Firefox OS suddenly OEMs are going to open source their drivers, ship unlocked bootloaders, etc...? If so, I've got a bridge to sell you.
http://source.android.com/ http://www.cyanogenmod.org/
Plenty of choices of Android builds that have no closed-source Google code whatsoever.
> I don't even have full comfort over everything running on my Android device. I have no way of knowing which companies can access the data on that device and the ways with which they can access it.
That has nothing whatsoever to do with the OS. You think just because it's Firefox OS suddenly OEMs are going to open source their drivers, ship unlocked bootloaders, etc...? If so, I've got a bridge to sell you.