Whoa hold on there, Fortnite has an ESRB rating of Teen, which is intended for audiences 13+. Should Twitch be recommending Fortnite content to 10 year olds?
You can, as others have, about any platform that allows salacious content. It's not different than banning trying to ban GTA because 10 year olds have playstations. Why is softcore content the line and not GTA which has a mature (17+) rating? Why is Amouranth a problem and not Grand Theft Auto. Even Fornite has an ESRB rating of 13+. It's straight up moral panic (and IMO, moral panic directed at women who are making money from doing "nothing").
My barometer for this issue is why is this content a problem on Twitch, but not on Instagram which has a much higher penetration amount kids and teens, and is way more brazen about it.