you mis understand his point.
You wont be able to go on-line and play multiplayer using copied games.
They wont be retrospectively able to stop the console running the code, but they will be able to retrospectively introduce something that can tell you're using a burned DVD rather than the genuine disc when you go on-line.
Thus its likely any games you do pirate will play, but you won't be able to use the multiplayer aspect of them.
Which kind of defeats the point of having the game on something like COD.
This part is in every BD player and is part of the actual hardware of the drive, nowt to do with the PS3, i guess it could be spoofed but at present it already happens.