When trying to frame the national title conversation in college basketball, there's always a splinter group that insists we disregard every team outside the Power Six 
Never mind that Butler came within a half-inch of winning the national championship, or that St. Joe's missed the Final Four by a similar margin, or that the CAA has produced as many Final Four programs since the millenium began as the Pac-12 (two each).
And it seems, in a paradoxical sort of way, that anti-mid-major sentiment metastasizes when the team in question has a gaudy win-loss record—as if winning one's games is a referendum on the opposition rather than an endorsement of one's worth.
So it should come as no surprise that Gonzaga—27-2 and ranked second in the nation—is facing the "fraud" charge from some fairly prominent critics.