MMO's go through Buffs and Nerfs all the time. Whether it's from Mobs or a particular job being too week or too strong. The game is ever changing, even FFXI in time took out delevel, increased experience gain, adjustments on a patch to patch basis on how strong or weak a mob is.
If people really call out for harder content ( like this thread here), they are bound to make it harder at some point.
When they do make the game harder, don't turn around and saying "it's too hard, I can't progress" because you are asking for harder content right now. ( Same thing happened in beta, game is too hard, they nerfed it now people are saying it's too easy....) Make up your minds!
PS: I want harder content too btw.