But it can cause trauma, and harm. What this shows is that it’s not inevitable. It maybe even shows that it causes trauma and harm rarely.

Who should be protected from it, and by who is a different thing. I strongly against blanket restrictions, but one for sure they are easier. And they definitely protect people who wouldn’t get this protection in other scenarios, because for example their parents are shit. Another viewpoint is that probably this is the least important thing for people who wouldn’t get this protection otherwise, so maybe it doesn’t matter at that point. One for sure, there should be a better argument to restrict access than the currently provided ones.