But then you're expecting US fans to be happy with a bronze medal. Why?
Their expectations, like every other country in this tournament, is to win the gold medal. For some, it's a more realistic expectation than others, but considering the US won the silver in Vancouver and it took OT to beat them even then, it was not an unreasonable expectation for the US to win gold in these games.
If Canada loses to Sweden tomorrow, will most of the country be happy with silver or will there be more disappointment that gold wasn't won? Likely, the latter will be true. Why should that be any different for the US? They came in wanting to win gold, they left without accomplishing that.
Gold or bust is the right mentality to take.