Re: Xbox/PS question for the room
1. No they shouldn't. Feel free to turn it off if you so desire. Some people struggle to enjoy games without this feature. Play it the way you want, not how someone else tells you to play it.
2. Correct. But this is a game rather than a "firing a gun simulator".
3. Yes they should (those who handle firearms which is a very low number here in the good ol' UK) but no it won't. Should "teaching people that jumping from the bonnet of a car onto a speeding boat" be shown to need correct training to get the desired result, and failure to obey has consequences, in an effort to carry that over into the real world? And see 2 above.
4. It is a game. I realise this is the same as point 2 but feel it is so important it needs mentioning again.