the concept of auteur was developed in the context of film, but the idea extends obviously to games if you have half a brain and aren't totally ignorant.
see, with books and plays, it's pretty obvious that the author or playwright is the person who deserves the credit. with music, it was the composer. and so on. films were different. by analogy with plays, maybe the screenwriter should deserve the credit; but the script doesn't really determine the movie, does it? the big name actor matters more than the screenwriter, for better or worse. so who deserves the credit? after a lot of to and fro, the French determined that the director is the person who matters. this is, pretentiously, called 'auteur theory'.
it's exactly analogous with games. if anything, the persons described in the summary are even more auteurs than directors are, since the division of labor is even less distinct. they are the movers and shakers; the ones with vision (or, perhaps in the case of Romero, the charlatans who have masqueraded as such).
in short, you're an overly literal fuckwit with no real insight.