Buffet's comments about Wells Fargo were a little vague and off the mark. The corporate culture created by Stumph, CEO, and  Carrie Tolstedt, head of retail banking, was found to be the driving force behind the fraud which earned them a combined $30 million in salary and for Tolstdet who retired just before the poop hit the fan, $143 million in retirement stock options along with a healthy pension. A just reward for a person that probably destroyed the retirement dreams of many investors

As for Warren, he was a large investor  and probably had or should have had representation on the board. He owes it to his investors and shareholders to stifle the rampant greed that creates this type of crime.