Ok. Let me clear it up for you...
You posted... Today, at 03:23PM.
You quoted, a person who posted on April 23.
That was around 20 posts ago.
I don't see a problem, Green had an interest in knowing what RKO did, so he asked him about it and RKO should come by, see it, then answer when he reads the thread. Just because it was from a few days ago doesn't mean he's forcefully locked out from further discussing it.
It was not a gravedig, and he did nothing wrong, you are being way too strict when telling people if they can post or not, you have little authority here and you aren't even using it properly, you should wait when someone is actually at fault before badgering them.