That must be why all the build guides dip for evasion and mettle.
I seem to remember something about full BAB and concentration checks...
Example of what you are doing: "Hey, what color is the sea?" "The sand in New Mexico is white in some places."
That's not helpful. It's not even relevant.
He didn't suggest total immunity to magic. He suggested innovative ways to get around it. Sometimes that might be shaking off the effect of a spell like with mettle, but it could also be slicing through a spell like that dark elf from that one author did.