It just seems like some people are itching for a fight about whether antisemitism should be considered a valid concept. Considering history I would say it illustrates an aspect of human nature we should all be not just aware of, but wary of.
Whether it manifests as 100,000s of thousands hacked to death with a machete, 6,000,000 plus industrially liquidated, or the sterilization of marginalized social classes by all states in general there are far too many willing to apologize for or just stand idly by while this instinct is manipulated as a tool of gaining and maintaining sociopolitical dominance.