You think directing your massive fortune towards spending on luxury goods isn't in itself "twiddling society's levers"?

Yeah, you don't build a yacht in isolation, you need labor, resources, it has a cultural and environmental impact.

Whatever you do with so much dough is gonna have consequences, there's no staying neutral.

It's not the same because it's within the bounds of what the economy "wants" you to do. It's an option that's available, instead of modifying the fabric of society to create an option that was previously unimaginable.

I think that's a completely broken idea of how an economy works. There's no neutral position where your cooperating with an economy "wants".

They're not qualified, but they wield it anyway.

Billions of dollars are billions of dollars that could be spent building schools, housing the homeless, feeding starving people, etc. Saying that it's better that these people starve, freeze and die because of a vague fear that Man shouldn't meddle with certain things and spending on personal luxury and yachts is the better option seems like philosophical lazyness.

Or doing Koch Brothers stuff.