From the point of view of a user who considers himself lucky when professionals help him to play a variant online, the comment is difficult to understand.
Game Courier can be used simply as an online set of equipment without any rule enforcement programmed into it. This allows people to play a game as they would with physical equipment if they were playing face-to-face, meaning it is up to them to know and abide by the rules themselves. This makes Game Courier useful for playing games that cannot be programmed, and it allows non-programmers to play their games without getting them programmed. For the purposes of building a demonstrable history of people playing the game, having the game programmed for Game Courier is not required. However, it is still desirable to have a game programmed.
Game Courier can be used simply as an online set of equipment without any rule enforcement programmed into it. This allows people to play a game as they would with physical equipment if they were playing face-to-face, meaning it is up to them to know and abide by the rules themselves. This makes Game Courier useful for playing games that cannot be programmed, and it allows non-programmers to play their games without getting them programmed. For the purposes of building a demonstrable history of people playing the game, having the game programmed for Game Courier is not required. However, it is still desirable to have a game programmed.