Imagine if someone defended nazis with “they were calmly denying the Holocaust”. I’ve seen far too many tankies denying the Uyghur genocide every chance they get. Like you say, it doesn’t matter the tone; genocide denial is itself a line you don’t cross.
Exactly. When the accused has paid off half the jury, you shouldn’t put much stock in the verdict.
The only thing I care about when determining whether something is a genocide is the facts of the case (which are overwhelmingly in favor of describing the Uyghur genocide as a genocide), not the outcome of a highly political vote by countries all with their own motives and interests.