We do. I was making reference to when you're actually watching the content in and of itself. At the time of upload it's explicitly asked that the person doing the upload has the consent of everyone in the video, and that everyone in the video is of legal age, which is 18. There might be places in the world where it's not 18, but we use a governing law of 18 irrespective of where the content's uploaded from.
On February 5th, 2021. See this statement in context.