Good hypothesis, but from a psychology standpoint each one of us is unique and thus has its own peculiar things. A man with a bright mind that was capable of creating Bitcoin is certainly special like every one of us. My point is that not everybody has a need for attention and fame. There are people who just want to do meaningful things and not be the center of attention. Just imagine the amount of publicity and renown he would get if he revealed himself. One needs to think deeply about his lifestyle when making such decisions.