Well thats fair enough as long as the assistant explained it to the parents. If he didnt then thats just another thing that needs to be changed and one which will if the ratings become legally binding.
Heres a question though, if the ratings become legally binding yet the parent, knowing the game is unsuitable of their children, still buys the game for them. What happens if they were caught? Are they prosecuted the same as a retailer? Is supplying the same as selling?