I think its funny people who get so upset at coaches going for 2 to win vs going for 1 to tie(and OT) at the end of the game.Because Bill is not nuts. At 30 - 30 youre still in the game headed to OT if nobody scores again in regulation.
You take the PAT, tie it up and put the game on KC's latest Kicker who already missed one.
If we assume that the chances of winning in OT are ~50/50. Then there is basically 0 statistical difference in chances of win in going for 2 vs going for 1+OT.
In this case considering that LV was the underdog they probably increased their chance of winning by going for 2.
At the very least going for 2 decreases injury risk