Warren Buffett may be more diligent when he plays cards than in enforcing the policies he wrote for Berkshire Hathaway. Principles only matter when they are inconvenient. A policy that isn't enforced isn't a policy.
Berkshire Hathaway's reputation has revolved around the lip-service paid by Warren Buffett to a high standard of corporate governance. Now, the moral tone set at the top is now being publicly questioned.