Here's the same video.
I saw the video before and I wanted to rip into his technique but then I looked at the person holding the pads, who appears to be teenager. The coach may be purposely pulling back on the power as not to hurt the teenager. I only say this because I've seen him fight before and in the fight he was hitting harder than this. However I could be wrong. A couple of the punches looked as if he tried to put some heat on them. He also threw some punches that were just like he threw in his fight below.
I don't know how the punching pad that he's using works, does it redirect or absorb that much force from the impact? I ask this because I wouldn't let my students hold a pad up like that for fear that it would damage their arm even with a weak, but well placed punch.
From a practitioner's point of view: Train with bad technique, fight with bad technique.
That noise that he makes is irritating and in my mind it reflects a misunderstanding of breathing and power. Sometimes people make noises like that to make it appear that they are killing the bag, but the punches are actually weak. We saw Rousey "kill the bag" with that same noise but her punching mechanics says that those punches don't have any real power. It just looks and sound like they do. I get the same impression with this guy
This is a better representation of his skill sets. I'm not sure why the other fighter was so afraid of him.