Disagree to a certain extent....yes its a free game and the users are not giving them back anything at all for sustaining the game on the long run rather the users get an incredible experience playing the game which is attached to the show itself...but the moment someone spends money and it doesn't matter how much ,its a different issue altogether...the developers liability raises and they are responsible for the better performance of the game. Its not those early days when the game was yet to generate income but now I believe the game has achieved success and features in top 10 highest grossing games on IoS consistently. Therefore, as said above the performance must be upto the standards a normal user would expect and there is nothing wrong in doing so but i don't know how much help it would by posting it here.
P.S. I love the game and haven't had any issues yet..EA is doing a great job atleast as far as my experience is concerned.