If it's going to be a logical fallacy there has to be a logical argument, which there is not here. So I'm at a loss. Maybe you're referring to poisoning the wel

If it's going to be a logical fallacy there has to be a logical argument, which there is not here. So I'm at a loss. Maybe you're referring to poisoning the well, which the wikipedia page refers to as an "informal fallacy". I disagree in any case -- OP is only presenting relevant context that can be a guide in assessing motivations.