Except that if you're ruled going to the ground your steps did not matter in the slightest then. You can take 4 or 5 so long as you're going down. You saw the video, right? Did you see Dez go anywhere with his body other than down? That's what they were looking at. And when that's the case, the ball has to not touch the ground and come loose. It did. That's a done deal on the GTTG rule, which supersedes your upright rule claim. Again, if Dez was upright and not falling, why did he not just run into the end zone? Because he was falling, right? Then you have GTTG. That's how it was then. They changed it now so NOW you can claim 3 steps means something. You could not then.
Fought gravity? Lol. Did he win? Because if he did, he should have just run right into the end zone, right? Why didn't he? Because he was falling. There's a rule for that. It's called going "to the ground in the act of catching a pass" verbatim per the rules and you have to meet that standard. We both know he didn't. Don't know where you're getting "actively controls his body" from but that's nowhere in the rulebook. You can actively control your body and fall to the ground. Look, I'm actually telling you theorists what to attack here and it's the lunge part. Dez clearly tried to lunge with his 3rd step and slipped on the turf doing so (that's not body control, is it?) which is why he couldn't get an actual lunge off. Because of that, his trajectory never changed on his way to the ground. That's what they were looking for. If you're not falling, show us that you're not. No trajectory change? You're still falling, so they apply the GTTG tag. And yes he does need to meet a running form requirement: it's called not crumpling to the ground after you snag a ball in the air. If you're a runner, you keep running after the snag, not faceplant after slipping.