"you can't stop eight year old from ..."
Phrasing this as "you" versus "a second party to the child" involves me, where I originally did not present a statement that would give the impression that I'd be involved. Keep me - "you" - out of it. I'm simply making fun of this analogy.
Let's not go down the semantic argument route and pretend like the impersonal you is not a thing in the English language.
Enforcing anything other than that is a huge 1A violation IMO.