I am to believe that this guy is an expert on a subject that he can’t even spell right?
If you do a search, you will find that it is spelled both ways (by evos and creationists alike). Indeed, the valley Neandertal was named after is spelled Neandertal, not Neanderthal.
What is your argument? In any case, the argument used by the authors of the article are no different than the arguments used by Darwinians in adjoining chimps and humans. You should be happy, the neandertal/neanderthal and human difference is one of no distinction.