Good stuff! Like how fluent the interview felt.
One thing though: I am not so sure that game developers WANT to make games about killing. My take on it is that developers think that games about shooting is the only proper way to go about, or at least the basic ingerdient you put in and build everything around. And then because of this, they make themselves believe that shooting games is what they do want to make.
What we do actually affect our attitudes more than the reverse*, so I honestly think this is a possibility. The upbringing of game developers, both as players and creators forces them into a very specific mindset that they then take as their own choice.
* For more info, lookie here:
http://youarenotsosmart.com/2011/10/05/the-benjamin-franklin-effect/