If it mattered that much in that season, then by any rational logic, it should have been reflected in their records WITH the player and WITHOUT the player.
But it didn't. The team was basically the same team with Elliott as they were without him. Same basic record. There was way more at play in that 2017 than just losing Elliott. Prescott was inconsistent all year. The defense was woefully bad at times.
Again, if we were 8-2 with Elliott and 1-5 without him, you'd have a better case. But we were essentially .500 with him and .500 without him......... which tells you there was way more at play that season than just not having him.