Not because Wyoming is doing so great they can win - but because they hate BYU enough and will have plenty of fire going into the game. He mentioned that all summer long, the players have been hearing locals, NIL donors, and everyone else around the state tell them "just beat BYU."
Wyoming isn't a very good team. But that doesn't mean they won't play hard and that BYU can't lose if they aren't prepared and don't match Wyoming's fire to win.