Yes, the world is filled with things that influence us. Consider all those advertisements on TV; the billboards on the side of the highway, radio ads - these are all people
actively trying to manipulate you. There's a whole field around it - "marketing".
And you know what? That's fine. Being free means living in a world where there are good and bad influences abound, including stimuli that is specifically trying to influence you, and stimuli that is really isn't. It's up to each individual to decide what they will let into their lives, and how much they will let others control them by the influence of videogames/television/radio/the internet/conversations/etc.
We do not need to be censoring the world to save the poor impressionable children from being negatively influenced. That's what parents are for.
The content is already rated and restricted by age. So, if 12 year old little Johnny spends all day
flipping bits on a hard drive "wasting bad guys" in FarCry, you can be assured that it was either bought by, or at least consented to by the parent(s). This is a "problem" the tech already solved [
1][
2][
3] , it only requires the parents will to use it.