Being unable to handle criticism is not a trait that is unique to people in power. They just have more ability to lash back.
And it wasn't as much criticism as an expose; one whose sole purpose was apparently to show the Browns and Haslam in very negative light. While I don't like Haslam at all, I don't blame him at all for pulling his advertising and sponsorships after that. You don't bite the hand that feeds you.