I can't speak for every case of those game's and their stories and missions, especially since I don't play CoD, but the majority of those targets you're shooting at are actual terrorist groups.
And with statements like:
Its creator argued that the game is no different from numerous games that allow users to kill Arabs
He's basically equating Palestinians, or Arabs, with Hamas. So he is basically saying that Palestinians / Arabs are all terrorists, just like he's basically saying the IDF are terrorists. At that point he might as well go the next step and add the ravers to slaughter and rape.
Also, the game historically has had ~25 concurrent players at any given time. I donât think this game is as important as certain people would want you to believe.
Certain people? Who?