JohnZi

Apps do get updates, but they aren't the issue. The system/kernel/system libraries don't get updates and if they are compromised all your apps are compromised too. If someone know a vulnerability only in a normal app he can't do anything but look at only this one app, with system access well he can do way more.

(Also Android got some additional security/privacy features after Android 4)

They had a video of playing Unreal Tournament (the new one) on a Talos 1 with a AMD card.

As long as a card with Open Source driver support gets used it should work mostly fine. Back then they need a 4line patch to play ut4.