My point is that "in the process of making the catch, if they player goes to the ground, he must maintain possession." Once the player makes the catch and puts both feet down, that process is over. If he lands on his butt or anything, that is the start of a new process. The flaw, in my opinion, is how long the process of making a catch is. If there are any actions after the first two steps, it is a new process. If his butt hits the ground after the two steps, it is a new process.
If instead of hitting the ground, a DB strips the ball after 2 steps, it is a catch. The process is over after the 2 feet are down. If he doesn't get both feet down before hitting the ground, I agree. The process is not finished, no catch.
I dispute their definition of "in the process of". It should be completed the same in every situation. Control and 2 feet down.
I want to go out like my Grandpa did. Peacefully in his sleep.
Not screaming in terror like his passengers.