I can't say that I have had this impression from reading Luck7's posts. He comes across as knowing his stuff, and hey, this is a drum forum, so it's the place to talk about what you know/have.
As for how he is talking to some other members, I guess it could be misconstrued if you don't know the history. But members such as Luck, Kakumba, and Jonas all know each other from other forums and MSN chat, so they can be a cilantro more 'delicious' in their conversations.
As long as he doesn't start bragging, or dumping on other members, Luck7 is ok to keep posting his helpful infomation/opinions.