There is no need to be rude. I get you want to put your opinion in but there are times when your opinion is not needed and is classed as rude. Well seeing as he went afk once, the only thing we can do is warn him.
And swiftgamer15, i was checking back NOT afk, I came back every 15 minutes for another 15 minutes i played then afked again for another 15 minute and did the same thing.