Yes, someone else, (including themselves and billions of us) are enjoying the fruit of their labor. So we are eternally thankful for that. The fact that someone makes 400k at Wikipedia doesn't take away from its impact on the world.

Also as I read this article, I get the sense that the person writing it has no clue what an endowment is, and that's driving a lot of the misguided indignation in this article.

If you have a $300 million endowment, it doesn't mean you have $300 million to spend. It's the interest/investment gains from that money that fuel the organization. So the interest/investments from $100 mil vs $300 mil doesn't equal that amount. It's much less. The whole point is that the $300 mil will remain "forever."

I don't know what the solution is, to be honest. I worry more about articles I read about how very few people actually have an outsized amount of contributions, and who is checking their biases?