Similar issues have existed on lightly or unmoderated online games since the dawn of time. Would you support banning Minecraft for the same reason? I think games that encourage technical and creative thinking stand to benefit more than they harm.
They absolutely require closer parental supervision, though. Moreover, the developers at this company need to crack down on pedos both from without and (according to the article) within.
You might as well ban the internet too. And all phones. While you are at it make them where a gag when traveling between home and school to prevent them from talking to strangers.
If I prohibit my kids from going down a particularly unsafe street, that doesn't mean I'm against roads and sidewalks. Curious what stake you've got in this that you'd reply with such ridiculous hyperbole.