With violent game play and the gamers having foul mouths anymore, especially in first person shooting games, I would say no. His age is probably a factor, but you know his maturity level. His microphone being on mute does nothing for what he will hear.
Don't let him fool you on that. If he's hanging out with his friends at their houses, he's probably already been playing it. However, it doesn't mean you need to have it in YOUR home, just because "all his friends" play it.
I'll say the same thing our parents told us when we (as parents ourselves) were kids. If all your friends jumped off a bridge, would you do it, too? Your house.
Your kid. Your rules. And definitely do some research before making any game purchases.
Read reviews, watch game play, etc. (As others have said.).
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.