There's no "or" to be made. Empty line-ups encourage lazy play and a game that would fall very short of awesome. There's no reason to conclude that this is the only viable way to make more flexible management of game time possible.
100% agree with the statement.
now a manager has to understand tactics & train correctly to make his team stronger. with that empty line up feature, it's just brainless selecting your best 12 players and letting the GE get the best possible result (also less likely to get an upset that way)