I don't think Dustin is being disrespectful, that's nonsense. Dustin taking a swig of beer at the end of that clip worked really well as some sort of artistic device. I can't blame O'Dell for including it, it's too good to leave out, although it would have been reasonable to cut it. If anything, it gives the impression that Dustin himself is headed for destruction, as though he's somehow unaware he's headed for the same negative outcome he's just finished describing. Which I think is demonstrably untrue, Dustin's legitimately maintained his his status as a pro skater for 15 years, no matter his reputation as a drinker. It was a dramatic effect made at Dustin's expense.