The only time they might ever acknowledge it is when they announce the next expansion.
And the max they will say is one line like "The last expansion gave us some indication on what people liked and disliked in the game's story, and we did some changes in this new expansion to address some of the concerns."
If you fire someone for not writing the best story arc, there would not be a lot of writers left in the world.
Some of you all need to grow up.