Of COURSE he refuses to practice what he preaches!
Anyone who thinks that Warren Buffett is actually saying what he says out of altruism or patriotism needs to check themselves for kool-aide stains. If he actually gave a shit about paying taxes, he would re-work his money funds to that he paid an actual INCOME TAX instead of investment taxes, which are taxed far lower than income.
But he won't do that. Because he's a god-damned, gutless hypocrite. That fucking tool.