...because he already knows what a monster Netanyahu is and it never bothered him before.
Something that is absolutely despicable about all of this, is the fact that the world and his dog knows that this genocide and all its associated crimes are being committed and prolonged in big part, to keep Netanyahu's sorry arse being hauled up before a court on other charges for other crimes and very possibly ending up in jail.
To know this and still go on supporting him is to my mind, a lot worse than supporting him because you actually believe in all the "Israel has a right to defend itself" and Hamas being an existential threat to the existence of Israel, bollox.
That's the greater of two evils.