The reason being because there actually is a difference between newbie and what you wrote. A newbie/newb are those who are new to some task and are a beginner, but they are willing to learn and fix their errors to move out of that stage. The term you used is a harsher derivative, entailing the characteristics of one who knows little, and has no incentive or perhaps ability to learn. me90- is perhaps the former, but not the latter. That is why it was censored... though in truth, we're in the midst of adjusting the language model for the profanity filter so don't be surprised if it bleeps you on common/civil words as well.
In regard to the above, me909388 is perfectly fine with his post - in fact, we encourage such questions - and likewise, encourage veteran players to help field the answers (sometimes with flourish, but always with civility)... as Florentino did.