It was just an example. It's easy to say "I don't care about what they spend their money on if I'm getting value" if they are reasonable about spending the money. But it's very easy for foundations to start spending a lot of money in ways that aren't very key to their mission.
Speaking as a long-time WP editor, if the Foundation decided to fly Wales around First Class, that sure wouldn't bother me at all. The man has devoted himself to a widely-recognized and ever-more-succesful project ... I think he deserves some perks. (A helluva lot more savory than W's frequent flights to 'cut brush' on his 'ranch'.) He's the man who's got to answer the world's questions, after all (and who was, I'll add, right about a LOT of stuff).