Oh boy, some of these replies, I too like posting in threads without regard for context.
Look, in the grand scheme of things, this isn't going to matter, Kojima's name is all over that game.
However to those that don't seem to get why this is a problem, if you've been paying more than 0 attention to what has been going on with Kojima productions.
This removal on the box art isn't a business move, it's a personal move, everything about this entire situation has been petty nonsense in regards to scrubbing all traces of Kojima from his very own series that he has been hands on with from the very beginning, this isn't like Tom Clancy or whoever elses names where the person has basically jack shit to do with the game anymore.
This is about a man being very close and passionate to his games and also the fans, working hard to establish a new and versatile engine, and basically being an all round positive face for Konami, but they rather say "You work on this until it's done and then you have to fuck off" and while him and his team work on finishing it, they're going around removing his name from his own game, the last and most likely best MGS game we will get.
So you know, there is a reason why people care about this and not other names, it's the principle of the matter.
Honestly everyone around Kojima probably feels more strongly about it than he himself does.