You like that phrase 'patently absurd' but I dont think it means what you think it does. Sure the device is customer tuned for the absolutely best experience, but Apple has clearly already demoed it (so that's feasible) and have announced plans to demo it on Feb 2, so its patently obvious people can and will jump in the car and drive to the Apple Store for a demo.
I don't need to have the perfect fit, or have the perfect focus, for me to get an idea of what its like to wear it, to learn if thats going to bother me or not. And even out of focus, I will be able to get an idea of the interface and its eye tracking ability. I don't have to have it custom tuned to answer a lot of questions. I might decide then and there, not for me. Or, I might say 'do you have any in stock, and if not, when can I expect to get one?'
And suppose I did decide after the not tuned to me demo that it was worth trying out custom tuned.... and take it home. And then after a week of testing it myself all custom tuned at all, I decide, nope, not for me. No big deal. I return it.
I suppose you could say I could save my time and effort by just agreeing with the nay sayers that havent even tried it yet.
But no, I think I will find out for myself. Thanks! Patently logical to me.