I resonate with the rant (not so much the light grey text on white theme but that's something else) which is that many parents are not proactive in their kids upbringing with regard to morals or societal expectations. But lets look at that part of it for a moment.

Parents are really busy these days, most often they both work, a depressing number are single parents, they have a certain amount of 'parent/child interaction' time available when they are both in the same place as their child and they are not asleep. Further, the normal foibles of kids consume some of that time uncontrollably (you have to go to the doctor to get that bean pulled out of your nose, you have a history project due tomorrow that needs help, going to and from soccer / band / daycare / school Etc. Parents also need times for themselves to process work stress, spouse stress, family issues, etc.

Now in that environment your kids like to play computer games (seems pretty common) and the friction of getting games is fairly loose, but games (like books) can introduce your kids to concepts before you as a parent have had a chance to put some structure around it. That will lead to questions and discussions that really do have to happen 'right now' because not giving kids any guidance when they encounter those questions is really bad parenting. My personal opinion is that 90% of a parent's 'job' is to prepare your kids for the society they are about to enter, poor preparation reflects badly on them, on you, and is generally a losing proposition for society in general.

So 'read the box' as an indicator for 'good parenting' is not sufficient.

We always made dinner time a time when everyone got together, had a meal, and talked. We have an old copy of the World Book encyclopedia, a dictionary, the CRC Handbook of Physics and Chemistry, a world atlas (post USSR breakup) and the desktop science reference all to settle arguments of fact :-). But more importantly as our children aged we talked about money, violence, relationships, crimes of intent, crimes of passion, morality vs legality, responsibility, politics, civics, religion, and books. The goal was to have the conversation about a topic started before it came up as a question so that when it did come up they would bring it to the table and we'd talk about it.

So exhorting someone to do that, embrace parenting as your primary responsibility to your children, its a good thing. But I totally understand when folks are so exhausted from the rest of their life that it takes a back seat.

So read the box, talk about 'cartoon violence' versus 'real' violence, go sit in the local ER some time if you're in a major metropolitan city to see what 'real' suffering looks like rather than on screen, add a med kit and blam back into the action. Most kids can separate imaginary from real at a pretty young age. Personally I don't think it is inappropriate to understand reproduction and sex fairly young, it's probably not worth trying to explain the impact on ones brain until puberty since it's really hard to convey that the chemistry of your body can work against your judgement.

Understand that when you have kids it is a bigger commitment than just saving money for them to go to college. :-)