Newbies/beginners and senior colleagues too do make this mistake of arguing with people in conversations that are not worth arguing about. Instead of responding to some quote where you were corrected you can just learn and remain silent than make some blind arguments that can lead to more wilder conversation that will either be out of point from the actual discussion.
Most times I see people creating enemies for themselves because they want to prove a point that they know some bull shit.
Just a friendly advise..
Your advice is valid, but you have to take into account an important factor. Many (if not most) participants in the discussions are participants in signature campaigns that pay for posting, so it will help them to create posts and engage in discussions, no matter how futile it may seem to you. Drama and stirring up trouble is one of the techniques that many people use to find what to write. Unfortunately, this is a fact that is not hidden from experienced members and can also be easily noticed in the “Reputation” board where you may find members intervening in problems that have nothing to do with them, and not only to give an objective opinion, but also attacking others based on ideological differences or misconceptions.