Meh. It's a game. Who cares if it disrespects a dead man? Let's be honest, this is a man who gloated over the deaths of innocent people. This is a man who believes he is going to Heaven. Well, he's the one that has to explain to his suicide bombers where their virgins are.
In all seriousness, let them make it. If it was pushed in front of me, I would play it. If I played a game where I was the villain, I would shoot the shit out of me. If the game was totally photorealistic and focussed on every minute of my, or ibn Laden's death, maybe then I would be concerned. But, this is totally fine.