From my antifascist perspective, an Apartheid state killing children is what is truly absolutely unacceptable.

That´s an obvious attempt to derail from topic and a weird thing to compare a meme with but I fully agree with the statement itself.

If diverse sectors of that society are not OK with war, Apartheid and murdering civilians, it’s on them to mobilize to stop that

What are you organizing to stop the crimes of your government? Would you like to be held responsible for the crimes of your government and it´s military, even if you did not vote for them?

not on the rest of the world to refrain from criticism just because the human rights violations their state actually commits are similar to delusional bigoted tropes about their religion.

Of course not but that criticism should be smart and differentiated. If it´s too generalizing, like this one, it can easily come across as antisemitic.

Also, criticizing the actions of a State, even a religious one, is not hate speech.

Maybe there is a misunderstanding? I assumed the national flag represents not just the state of a nation but also all of it´s citizens?