I agree, and what these folks don't understand is that you'll also have to replace every DoaM mechanic in the game. If at some point if DoaM becomes pervasive throughout the entire system that task becomes difficult and likely unmanageable. At that point the end result is that you won't play the game anymore
But, what evidence is there that DoaM is pervasive? It's the same argument that was used about non-magical compulsions in 4e. People endlessly kvetched about things like Come and Get It, making exactly the same argument - that it's pervasive, the tip of the iceburg, etc.
However, the reality is, across 4 martial classes in the 4e PHB, with some 300 powers, you have only 4 non-magical compulsions. That's it. About 1% of the powers available, and, even at the levels where those four appear, there are at least three other choices for each class. It is entirely possible to play 4e without having a single non-magical compulsion appear in the game. In fact, it's very, very easy for it to never appear.
The same applies here. We're talking a single build option for fighter types. And, there is no evidence that all GWF will be forced to use this mechanic. It is entirely possible that this will one of several possible choices.
In other words, this is a mechanic that is there for those who like it and easily ignored by those who don't.
But, I get the feeling that it won't be criticised that way. It will be endlessly kvetched about until it's either stripped from the game, errata'd or otherwise excised. Same as the powers in 4e. Because, hey, we must ensure that the game only has options that appeal to the loudest critics, those that like the option be damned.