What exactly is the tax benefit to giving away almost all of your wealth? Tax loopholes reduce your taxable income, which lowers your tax liability. I don't see

What exactly is the tax benefit to giving away almost all of your wealth? Tax loopholes reduce your taxable income, which lowers your tax liability. I don't see how you can come out ahead giving away almost everything. Can you explain what you think he is exploiting and what the benefit could be?