Hollow denial

https://money.cnn.com/2018/07/18/technology/zuckerberg-recode-holocaust/index.html


I can't easily imagine someone having any reason to think the Holocaust never happened.  However, if someone says it never happened, how can someone else assume that they're not in denial but are rather deliberately misinforming people?  And if someone were to deliberately misinform people about the reality of the Holocaust, what exactly is stood to be gained?  What is the benefit of anti-Jewish people in pretending to be in denial about the Holocaust?  What is the goal there?  The only thing I can think of is they want to complete the work Hitler started and can't do that publically nor can they do that discreetly if everyone is on guard about preventing another Holocaust.  Maybe such hatred for Jewish people still exists.  I don't understand it.  I'm not saying I believe the Holocaust never happened, but if someone is willfully spreading the notion that the Holocaust never happened, who are they spreading it to?  People post all kinds of stupid crap on Facebook thinking their sources are reliable.  What if a malicious anti-Semite comes across to some un-discerning pair of eyes as a reliable source of information and then the person who reads the words of this malicious anti-Semite believes it and then proceeds to post that information?  If that scenario is not possible, then what is the point of this "willful, deliberate and longstanding deception tactic by anti-Semites that is incontrovertibly hateful, hurtful, and threatening to Jews"