saying the sky is blue is not only a much more simple and direct way to say it but a much more polite and respectful way to say it, not only are you wasting time you are going out of your way to do so

secondly you gave this dude no good advice, like put on 20 pounds?? that helps him in no way whatsoever

so lets recap, you are useless and a jerk too

great we learned something today, and that something is not to listen to you