Didn't the exact same post get made after every raid tier since Wrath.
Not only is the playerbase more efficient and knowledgeable than it was, the multiple difficulties account for alot. Normal is not hard to many. Stop getting your knickers in a twist, your experience is your own, unless you've reached the pinnacle of your ability in the game, nothing makes a difference that someone else went ham the first day and trashed the easy mode.