The ridiculous zoom/tilt effects are added in post-production for dramatic effect, or whatever. You can tell it very clearly as the zooming/tilting/"WOW!" crap is far higher framerate than the source footage (watch the pieces of debris falling and how "stuttery" their movement looks, to get a sense of the framerate of the original footage). Now the question is: who added the stupid cinematic effects?
To be fair, if we're watching a 25fps iPhone recording of 12fps feed being played through a 60Hz monitor, the "zooming/tilting/"WOW!" crap" would keep the iPhone framerate, so it doesn't necessarily tell us it was done in post, although I agree that some of the frame-to-frame jumps in pan/zoom suggest these are not natural movements and that them being added in post for dramatic effect (or as another commenter suggested, to obscure potentially compromising information) seems to be a very plausible explanation.
