I was a little disturbed by it. More the implications that someone's alive one moment, and then they're not. The gore, not so much. I was more disturbed by Hostel and House of 1000 corpses, or the torture scene in Sleeping Dogs (More because it was a jarring tonal shift, rather than because of the content). How we tell that these things are real or not is not, I think, just some feeling that enables us to distinguish, and the squeamishness or lack thereof at the imagery is not simply based off what is real. It's all perception.
I was more disturbed by how dumb the episode was. I'm usually a fan of the Jimquisition, but this video just lacked insight, focus, and was rather shallow. Not only completely ignored any discussion of any relevant science, managed to fall for the argument propagated by the anti-gaming people that possible desensitization or increased aggression leads to a higher incidence of violence, ended up arguing against the very idea that games could increase aggression or desensitise (Which, FYI, wouldn't mean shit. Hitting a punching bag increases aggression. Listening to some sorts of music can increase aggression. Neither of these things are bad simply because they tend to increase aggression. Increasing aggression, does not mean increasing violence, and while violent games have been getting more popular, there hasn't exactly been an overall spike in violent crime. We're still (Although my stats were last checked a year or two ago) getting safer, not more endangered), and then whinging about the media reporting of the mass shootings. I mean, really, so what if games desensitised us to violence or caused aggression? They're still more than halfway from their case. From what I recall, the increases in aggression caused by violent media in studies on the subject didn't say a cummulative increase in aggression, or even an effect that was anything more than temporary. Certainly, it'd be interesting to know more.)
Yes, the media sensationalise their coverage of these events. As someone who runs a topical show, with an overblown bravado (Which is hilarious) for entertainment, the use of topics likely to be viewed, and presentations likely to gain viewership, should not be unimaginable. Doing so is hardly deep journalism, but then again, neither are using personal anecdotes as your counterpoint to studies hand-waved.