That's why they stopped printing cards that care about graveyard order. The last one was in...Stronghold I think (Volrath's Shapeshifter).
That is probably the reason many don't know how to stack their graveyard properly. If WotC never printed anything that used graveyard order since you have been playing the game you probably never took the time to learn it. And lets face it if people playing Standard can know the difference between "At End of Turn" and "Until End of Turn" then why is keeping your graveyard in order such a chore that they need to completely avoid making any new cards that would use it?