Perhaps. But one thing he shouldn't neglect is that in order to Hit and Expertise soft cap, you only need 5100 ratings. This is roughly equal to 5.76% avoidance (before DR).
Meaning if you ignore most of your threat stats you'll be getting in the best case scenario some ~5% more avoidance.
Does this small avoidance increase (meaning absolutely NOT reliable) really justify one to go ahead and ignore Hit&Exp, and lose most of the control he'll be having over his Rage generation? This is what bothers me most.
Not to mention the SBar issue, which simply makes the whole '' Mast=Parry=Dodge >>> Hit&Exp '' priority simply not viable as a baseline optimization.