No, it's not. It's about any attempt to gain possession of a loose ball, which includes passes, laterals, fumbles, etc.
Did you actually watch the Pats-Jets game this season where their tight end fumbled trying to reach for the goal line? Or read any of the news coverage about it, including the referee's on-the-record statement to the press about the play and why it was ruled the way it was? Apparently not, because you wouldn't be making idiotic statements like the quoted one.
That's because the ball was being jostled all the way to the ground before he showed possession for a score, and he landed out of bounds without control, which means Jenkins has to show he has it all the way through to score. Otherwise, it is a touchback because he WAS OUT OF BOUNDS WITH A JOSTLING BALL. Correct call and not applicable to Lewis maintaining possession, running 15 yards, ball jostled, with clear re-possession.
The Champ Bailey 2006 playoff call was ALSO wrong, too, but i bet you believed the ball went 90 degrees to the left at the 1 yard line, magically so, because that's what the refs told you it did, even though the overhead replay clearly shows the ball flying right over the pylon for a touchback.
Believe it or not, refs get calls wrong. lol
Lewis ran 15 yards and then the ball jostled, but he he saved it from coming loose, by pinning it to himself, on the way to the ground. Possession, ground. No fumble.
The situations are completely different. The problem with Sefarian-Jenkins is that he never really had the ball as he moved to the pylon, making the football move to score.
He has to show possession to score.