>Look at outcomes, not words and ambitions.

Does Gates have the power to change tax code? "Look at outcomes" makes more sense when it's something you have at least a moderate amount of control over.

There is nothing inconsistent about wanting a society’s tax structure to change, but also not sacrificing yourself (which the donations kind of are).

I want X rules, but I will play by whatever rules exist at the time.

It's possible this is not Gates' preferred outcome

What control does he have over that outcome that he has not already exercised?

With that kind of money, he can outlobby an awful lot of people.