Different concepts. Dar is referring to a game with far less immersion in which you spend >99% of your time at the end whereas Bioshock is a journey that ends when you reach the end. He worded it a bit poorly but that would seem to his the point.
For all of two people. Max level is the point of WoW and to focus on content below it would be a waste of time, energy, money and potential.
You're looking for a new game, not this one.