I still haven't watched this yet, but I can see their point that the original's Rosemary was certainly a woman of a different time - a pre-Women's Lib woman who, as they put it, "was very respectful and obedient of her husband." So, I can see why they felt the story was ripe for an updating to today's world. But I suppose that if that sort of update is going to work in an "adaptation" to a story that, let's face it, greatly depended on the wife being so "respectful and obedient" to her husband, said adaptation has to be careful to still make the situation Rosemary finds herself in believable - or at least suspension of disbelief believable. And like I've said, I haven't watched it yet, but if they tinkered with things to the point that the central plot makes little sense because the audience can't accept that a more independant Rosemary would ever find herself in the situation that she's in, then, yes, the whole thing was destined to crash and burn.