I don't believe it...
It looks to me like the iphone had been unlocked by one of the real methods beforehand, and they've just written a script with various appropriate length pauses in it...
If they wanted to PROVE anything, they should have video'd the phone before 'unlocking' rejecting the sim, then unlock it without the phone going out of frame..
Way too easy to fake what they've shown... I could make an equally convincing video of a device that unlocks the iphone just be being placed somewhere near it... look this is a "nearly new" iphone, I just wave my magic wand and hey presto, it's unlocked.
I call bs!