Hm, it's an interesting read, but I think I disagree with some of his conclusions. For example, he assumes that City 17 is the new capital of Earth after the invasion and that Breen is the puppet human leader for the whole planet.

I got a different impression: Breen is the puppet administrator of just City 17, and there isn't anything particularly special about C17 other than it was where the old Black Mesa people had holed up. The game is set in C17 only because Gman sent you there to meet up with the other Black Mesa veterans because he knew you'd need their help. I never felt like C17 was the key Combine stronghold, merely one place for the rebels to get a toehold in their long fight against the Combine.