Most countries including USA have Indecent Exposure laws, prohibiting women for example from flashing their breasts on the street.
Yet somehow online adult women are able to "flash" homemade videos of them making sex with multiple partners, and you somehow think it's ok for children age 11 to view this with no responsibility on reddit's part?
Also most countries limit what children can do. It's illegal to drink even when you are 20 in USA. Why do we think children are mature enough when they are 11 to view unmoderated usergenerated content on tiktok? Many made by 18+ people driven by commercial interest and many of these videos dangerous for children (for example many challanges, where kids die after trying to do them).
Obviously one can have this kind of naive liberalism view, that anything goes. I personally don't and that's why I shared my comment.