Here's why...
The CJ Rule is really about the receiver being in end zone when they catch the ball.
The reason is basically twofold:
1. A lot of catches in the end zone are ones where the receiver catches the ball and falls to the ground in some fashion.
2. When you catch the ball in the end zone, you cannot physically try and advance the ball to the end zone.
Rules are often based on intent and logic.
#2 is very important to understand why the CJ rule does not apply.
If the receiver is in the end zone, then *logically* they have no reason to try and turn themselves into a runner nor try to advance the ball to the end zone. Essentially, if they complete the catch it's a TD. Unlike if you catch a pass at the 5-yard line where you need to catch the ball and then try and advance the ball towards the end zone.
The rule states the pass must be completed 'throughout the process of the catch.'
So if the receiver is in the end zone and falls to the ground, that is the entire process of the catch. You are not going to see a receiver in the end zone catch the ball and either start running or reaching out with their arm because they don't need to advance the ball. It's already a score.
When the receiver is *not* in the end zone, the 'process of the catch' is different. Using logic, the process of the catch with the receiver *not* in the end zone should be when the receiver has control of the ball and then the receiver has the right to try and advance the ball. Otherwise, we could argue that WR's could not fumble the ball after a reception because they did not control the ball thru the process of the catch.
Since Dez extended his arm (and the ball was not coming loose as he extended his arm), the process of the catch had been completed and now he was turning himself from a receiver to a player trying to advance the ball. In the CJ case, the receiver would have no logical reason to extend their arm because they are already in the end zone.
I'm sure we all know this and understand this...I just think that the people pointing to the rule book are being a bit obtuse about how to read the rules and don't see how their interpretation contradicts the rules and don't understand the original intent of the rule.
YR