This is why the conversation is nearly impossible, even on hn. It's hard to find enough people who agree on which facts are objectively true in order to have the discussion.
Things end up stuck in endless loops of the loudest voices claiming that either "any criticism at all of Israel, no matter what it does, is antisemitic" or "no criticism of Israel is ever antisemitic unless it explicitly and directly refers to Judaism."
Ironically, I've observed many of the former have trouble understanding that racism can exist without using a racial slur, while many of the latter can easily write a 1000 word essay about dog whistles and implicit bias against groups other than Jews.