I think you're missing the point of Buffett's argument. He's not paid a huge salary, he's making the vast majority of his money off of investments, and because

I think you're missing the point of Buffett's argument. He's not paid a huge salary, he's making the vast majority of his money off of investments, and because he invests for the long-term, it means that when he does take profits, they'll be taxed at the long term capital gains rate, which is 15%, instead of the income rate of >35%. To "choose" otherwise, he would have to go out of his way to create short-term capital gains while maintaining a long view, which doesn't make any sense.