Dont come and state that they are incriminating themselves. Know that you are talking to someone that knows the law by heart. Incriminating ? You will need a lot worse crime, a lot more witnesses, and an active court case to get even the most basic grounds for a prosecution.
I'm not even going to begin with this despute because you will be like a child in my eyes, and I doubt that you have the background to even understand this complex meganism in law.
And if further useless slandering of someones reputation continues, there will be enough to actually take you on in a civil dispute in court. So I would advise you to stop your comments right now.
De minimus non curat lex - The law does not concern itself with trifles; - a principle of law, that even if a technical violation of a law appears to exist according to the letter of the law, if the effect is too small to be of consequence, the violation of the law will not be considered as a sufficient cause of action, whether in civil or criminal proceedings.