But unlike real spy rings, this one is centralized. By how they've described it on that site, everyone must trust the SMS gateway to give them orders, so the gateway becomes a single point of failure.
No, each ring has their own gateway, just like they have their dead letter box, etc.
Right, meaning each ring is centralized.
Which is exactly like a real world Dead Drop, and in the same way that a dead letterbox can be changed when the ring fears discovery, so can the deadSwap gateway. I'm not sure what you aare suggesting, if you could suggest a decentralized way a spy ring might exchange a drop, please let me know.
I thought that when you said "no" you were responding to the whole adverb phrase, not just to the "unlike" adjective phrase. I was correcting that "no"