No, he's the opposite of Limbaugh -- he's a philanthropist.
He was listed as the third largest donor behind Warren Buffett and Bill and Melinda Gates in 2008. He's also taken the Giving Pledge to give away half of his wealth to charity. The George Kaiser Family Foundation gives millions to the causes of education, child poverty, and community health services.
He's been proposing eliminating tax breaks for oil and gas companies for years. He would rather the money go to health and education.
He's not using this as a political stunt, he's willing to put his money where it counts instead of just being a blowhard like Limbaugh.