Because it's pointless making such videos cause if you fail in the game after that you're gonna look stupid.
The point is Denver and the rest of NBA knows that their opponents will either let the #1 option score and try shut down the rest 4, or defend the #1 option and leave it to the rest to step their game up. It's all about how well players execute.
That video exposes nothing. These people are professionals getting paid big money. They do their homework.