Comment by AzMoo_

There isn't an expectation that you will put in all the time required to completely learn a game, but there is an expectation that you will put in the time required to have a basic understanding of the game. As a parent you should know what games your children are playing, the type of content they're being exposed to within those games, and the amount of time they're putting into them. If you're not willing to put in enough time to know what your children are doing then don't have children.