A CEO who doesn't have a grasp on the numbers side of the business is going to have a lot of issues speaking to investors, lenders and other stake-holders. It also makes it tougher to control costs and understand the proper capitalization of the entity, internal controls, cost sensitivity and budgeting parts of business. Any accounting designation will get you there really. Obviously great CEO leadership can be backed by a strong finance team, but the CEO does need to understand this stuff to have a true grasp on their company.
"I believe that banking institutions are more dangerous to our liberties than standing armies. If the American people ever allow private banks to control the issue of their currency, first by inflation, then by deflation, the banks and corporations that will grow up around the banks will deprive the people of all property until their children wake-up homeless on the continent their fathers conquered."
-Thomas Jefferson 1802