why is his opinion more valid?

edit: "its his money" doesn't explain why he would be more able to judge how to donate money, or effect positive change than someone else. i understand he is allowed to spend it how ever he chooses. the point i'm trying to make is that someone is not inherently more likely to know the right thing to do than someone else just because they have more money.

Have you ever given to charity? If so, why? Why didn't you give it directly to the IRS? They accept donations, you know...

because it's his money

Because it is his money.

That's the principle of the free market -- central planning is inefficient.