This accusation of Motzie Shem Ra is based on the interpretation that because Lavender knows him it’s Motzie Shem Ra which I don’t agree with”
HuH? Interpretation? It’s not an interpretation. According to Halacha, if the people you are speaking to don’t know who you are speaking about and have no way of figuring it out, then it’s not Loshon Hora. If they do, then it is.
What are you trying to say – that something can only be Loshon Hora if the person you’re speaking to does NOT know who the person is?
In any case, even if that were the Halacha (which it’s not) there are people here who don’t know who you are talking about and there is a person here who does know who you are talking about, so either way it is assur.