See, this is where fans expose themselves for not knowing the rules.
On the Dez play, your average football fan didn't know that once a player goes to the ground those rules take over from the "upright" rules and you have to maintain possession of the ball through the ground. No matter if you took 3 steps. No matter if you held the ball out. No matter if you waved to your mama on the way down. The ONLY thing that gets a receiver out of "going to the ground" is if he executes a proper lunge because that shows you aren't going to the ground if you're able to change your trajectory and that is what qualifies as a football move. All Dez had to do was keep the ball off the ground and that's a catch even with the bobble. The official on the field was blocked from seeing that which is why the reverse angle is the one that overturned the call.
As for Butler in 2016, the officials announced the call wrong about a huddle. Butler's foul was running into the game to sub and then not participating in a play. In the video below, you even see the ref signal to the Line Judge after Butler runs out. Even still, the Cowboys coaches could have called time out to reset and not have the foul apply. They didn't. They didn't know the rules in sending him out there and then didn't use the escape hatch by calling timeout.
So, who got to Crayton to tell him to slow down in 2007 and not catch a sure TD that would have beaten the Giants? The Syndicate has massive reach I'm learning. Lol.