>>14106407this is actually not true
4chan just makes this claim without providing evidence that it knows who is and is not 18+
in reality they don't care if they have such a test
what matters is whether or not they have a legal defense when some asshole lawyer tries to complain about community standards and user generated content
the 18+ is there specifically for legal cover
nobody actually thinks 4chan can enforce it
as a result, treating this piece of legal cover as if it were truth or reality is more of a game of tiddlywinks than a real conversation