Does it seem plausible to you that during the years of the Syrian civil war, Russia's invasion of Ukraine, the Tigray war in Ethiopia, the war in South Sudan and countless others (conflicts which, in total, claimed the lives of millions), Israel would commit war crimes at a ratio of 2:1 against the entire world, combined?
In contrast, the number of deaths from both Israeli and Palestinian sides in the same time period was several hundreds.
It's part of a broader phenomena: feelings over facts. Doesn't matter how many commissions say it's genocide and how much evidence is presented, people don't "feel" it is true, therefore it is not true. Zero difference between these people, climate change deniers, and anti-vaxers.