Kent C, I think you may have confused cause and effect in your analysis. The article writer is talking about a cause, “inadequately internalized values”, while you are observing an effect of that cause, the liberal inability to recognize a fundamental right of life/self-defense. Both of you make great points, neither of them “lame”, IMO.
I'm not so sure. In order to internalize values in one's conceptual hierarchy, you first have to understand them and their relative importance to other concepts. The cause then is not understanding in the first place. The effect of that is not being able to internalize or operate on those values.
And part of the 'lameness' is the blaming of the lack of internalizing on video games (in the same way that the liberal blames the guns). AS IF video games were the cause. It's always the person who decides (or doesn't decide) and to make the 'cause' something external, is, imho, lame.