TO and chad Johnson started this whole thing when they started bringing in props, choreographed team celebrations, and actually causing delays in the game.
The league pretty much had to do something, and when that happens, there have to be guidelines because people play dumb and act like they cant believe it when a flag comes out.
So now, the idiots will be sat down, told to watch this video, and if you do something that is against the rules, pay the fine or get the flag. Now there are visuals (to help the people who have trouble reading) to go along with the written rules.
It happens alot, the actions of a few ruin it for everyone.