Steem have not restrictions in what you can do or watch, steem will have black media like "steem gives access to porn to kids of any ages as long they have an steem account" Steem will need a kind of restrictions for teens and kids to have access to adult content so I'm not sure if Steem as decentralize platform will restrict any content !!! Let's see what happens.
Facebook is the 5 most valuable company in the world so in a few years Steem is going to overtake them.