Why We Shouldn't Buy Kids Competitive* Online Games

Skip to about 2:30, the first bit is mostly preamble and lobby setup.
Swearing aplenty. You probably shouldn't play ^that^ on your speakers in a public place.
Saw the above Youtube video today, which made me ask many questions.

•  Is it wrong to judge when we had similar access to age-restricted video games?

Yes. We may have grown up on the likes of Tekken, Twisted Metal, and Metal Gear Solid, but none of these would have had the vast amount of violent content that can be found in video games these days.
The need for increased 'realism' can be blamed I suppose, as we expect a certain blood splatter from a headshot or realistic bone-breaking crunch from a 10-hit combo.

• Who's to blame?

We can't heap blame on a single individual or entity, can we? Parents will blame the video games company for poisoning the mind of their "precious little angel". Companies will proportion blame on those same parents who bought the game for their child for their birthday, for Xmas, or when the brat nagged them for it.
On a long shot, we'd simply say it was the older child, of legal age, who left the game out or in the disctray.
If you compare it to the arguments for gun control, and underage/unauthorized use (long shot, again) you'd see similar arguments being used.
And just like with gun control, the media will of course blame everyone it can name, as long as it creates buzz :)

• Is it just violent video games such as shooters or action titles that are to blame?

Not necessarily? There's a fair element of competition to seemingly more 'vanilla' genres such as simulation racers, MMORPGs, hell, even casual games like Farmville must have spawned some moments of 'holy f%#k you !#^$*& tit" I'm sure SOMEWHERE in the world. Here's looking at you America.
Being able to 'troll' or be aggressive in online games is the norm, if not accepted practice in some games. The allure of being say 9 and able to flaunt your prowess or monetary glory to someone across the world is just part of identity formation for digital natives that exist in such online spaces. Teabagging is another action that really is quite frowned upon in the real world (however we define that now), and for good reason, but is a commonplace action online. It's similar to how NFL players will have signature 'moves' and dances for touchdowns.

• Is blame even the right word? Is it just the video game's fault? Have the stories gained extra attention because they're related to video games, a trigger-reflex for "ermagherd violence protect the kids" thinking?

In the case of a US mother shaking her baby to death for interrupting her Farmville session, it seems less reasonable to think that such a colourful, peaceful game could drive people to doing this.
Before anyone starts thinking only women play Farmville, here's an example from the UK of a male (shockhorror) stealing a blind man's credit card to spend on the game, and stabbing someone else. Yikes.

• Does the kid in the above video come from any demographic, any culture, and scenario?

Yes, and no. We can no longer walk down the street and instantly name (and shame, maybe) the multiple identities people use on a daily basis. Less likely is being able to spot who's a Reddit mod, or who's the world's #1 Starcraft player, or the biggest and most dangerous troll on the internet. They could be among us, in our class, oooooooooh.

• Is it the swearing, the logic behind the swearing, or is the author a prude?

Pah. Definitely the first two.

Kids like the poor sod in the above video are eeeeeverywhere. Sure, there is an element of passive trolling in the video with the use of 'headshots only' mode (this can evidently be frustrating when you are completely unaware you're playing with this rule) but it does raise questions about how this growing generation of digital natives problem-solve in the 'realworld', and whether that behaviour has a measurable connection with their activities and similar behaviour in the online world of gaming, and beyond.

Necessary tldr version, lets be honest here, this may be assessed but it's still on the internet while you multitask. You're welcome.
tl;dr: watch video, be disgusted/approve of the behaviour of a nameless child in an online gameplay video.