Obviously the person asking the question did not read your clear and correct answer. This is especially insulting if it is someone new to the forums asking a question.
If you are going to post at all, why not just answer the question? If you are too busy to answer the question again, just don't post. After all, not everyone reads every thread, or even most threads. They come here looking for answers.
Just my opinion, and there I have said it. Feel free to disagree. Not aimed at anybody in particular, but to all of us in general.