I agree that he did the right thing. The kneel down is effectively 100% game. I know a fumble is likely, but its like 99.99% chance we win it. Remember, it was Aaron Rodgers we were keeping off the field. I kept explaining that to my wife, saying "If anyone can still take this game from us its that guy". Also, long hard fought game, lets just end it with out anymore effort, or risking any further injuries.
Finally, its a football game and that was the game plan on the drive, McVay probably made the call at the beginning of the drive to just get the first down. He wasn't running statistical analysis every play, that is ridiculous. So after the game, you can assemble all the statistics and say "Well Gurley should have just scored", remember that McVay & Gurley made the decision IN GAME with the idea that it is best not to give Rodgers a chance to win the game at the end.
Full disclosure, my opponent had Gurley on his fantasy team so I'm biased lol