They could use their money and influence to lobby the government in a positive direction, such as making sure taxes go toward social programs instead of killing brown people, and then simultaneously help fund that by filing their taxes fairly and paying their intended share rather than do this arcane skullfuckery to pay as little as possible. A great next step would be to lobby for tax code reform to close the arcane loopholes (and ofc massively raise taxes on anyone with an income north if $1M/yr) so that other, less charitably minded billionaires can start paying their share whether they want to or not.