That's just it, we don't know if he's even made any good posts!
Literally the only thing recognizable on his profile are his pictures.
He has no threads, no recent login, no reviews, no blogs, and no feedback. I consider the MOTM to be the person who has made intelligent posts, thrown up some good pictures, maybe an edit or two, has good feedback, has at least a couple blog posts, and generally used NS to it's maximum potential.
Now that type of member is one in a millino. However, that slim margin is what makes that single member so unique, and that's who should be awarded. Only when the selection process takes all of those factors into play, can I see Member of The Month being reasonable. If the equation for selection is to hard to change, make it Member of The Week.