I mean, normally with any other game, there is always supposed to be a testing team. During the development of a game the team creating it, is supposed to do alpha and beta testing on the game. It is their job and they get paid for it.
The open/closed beta thing started with the rise of MMOs. Since it was crucial to test the game with a lot of players in one server at the same time, developers decided to invite players from the fanbase to an open or closed beta.
With single player games the developers traditionally tested their own games, so they should actually be able to do that successfully. I don't know if game changers get paid by EA so forcing work on them isn't such a good idea I think.