Nope, not debunked. You're a homofaggot and weren't here to see the CORRECT explanation from someone who knows what the fuck they are talking about. Suck my oversized clit.
Paraphrasing, but it was about how if the reflection on the phone were coming from a 3D source (i.e. physically standing in the office), the skew/distortion would not exist (or be lessened, or some shit). Since it's skewed the way it is, it must be a reflection off of a 2D surface (i.e. a photo or screen).
Smartanon explains the how and why but I don't know what bread it was in. The shifting you see in the animated GIF is caused by the anon's Photoshop job not getting the skew/distortion 100% right, he eyeballed it (which you'd have to since it's almost impossible to know the orientation of the phone).