Then, I think the other thing that comes along with that is that if a parent does come across a game that they feel has gone too far, that they feel has content that they object to, that that makes it something of a moral objection.
Given the unstoppable force of users uploading content against the immovable object of rights holders attempting to control the distribution of their content, YouTube ostensibly did nothing.
This means online intermediaries have generous leeway to determine what content and commerce travels over their systems without the fear that they will be overwhelmed by lawsuits if other parties object to some of that content.