nice hypothesis...
it might be also someone that is not in this world anymore and passed away
and that by accident a person with the  name in question was living just few blocks away in a small town in US
and also by accident this guy was the first real word person to join the project that was created by satoshi  in sourceforge
and most likely it was not just one person but rather a group of 2 or more people involved
but it doesn't matter who really is, since his/theirs creation made something big already

and many people say that he can't be him or the other known suspect guy, since they were asked and they denied it. Who the hell can accept that he was the creator after all that fuzz that has  happened since then?