SE is not going to come right out and say don't do it. They are trying to give some freedom to the players to manage a situation like that, but they make it clear that doing so is not an SE policy or something they really encourage because then they'd make themselves liable to have to save someone after they get scammed..

If they say yeah you can do it but in actuality their policy doesn't support it then they find themselves at points where people are going to say..

"But you said it was cool SE.. I got scammed and now your GMs won't help me.."