I would argue that he is not doing anything wildly different from what Steph describes as a correct drop. His hands don't leave the bar until it is close to waist height and the bar impacts the floor pretty close to evenly. He's not exactly guiding the bar gently to the floor, but he is not actively throwing it down either. The problem comes when the bar bounces again. This is a product of the light weight on the bar and the bouncy plates. I still think that if you drop the bar the same way with 80 kg on there that it would probably look okay and not bounce all over the place like that.I don't really care what he is wearing to work out, it does not excuse sloppy form.