Of course they are. Children are part of the same culture that we are. They learn the same technology that we use. That exactly what they are supposed to be doing. Children master the environment that they are in, not the one that we grew up in.
When I was young, there were video games. Kids played them, too. The consoles may have changed, and the graphics may have changed, but the video games are still video games. Nothing new here. Nothing to get panicked about.