The saddest statement about online friends

I think I already remarked a couple of times that online games and social platforms have somewhat degraded the meaning of the word "friend". But today I read the saddest statement ever about the kind of friendships you make in online games: Zelmaru of Murloc Parliament advises people to not play online games with their real life friends, because it would "eff up the RL friendship". I'm not saying that he is wrong (there is a reason why I quickly gave up on trying to play WoW with my wife), but as a testament to the quality of online friendship I find this really depressing.