Except that they’ve been largely unsuccessful at the legal level. Courts in every western country recognizes the valid right to protest Israel and the actions of the Israeli government and expressly does not consider that anti-Semitic or hate speech.
There have been a few minor edge cases in some countries around controversial slogans like ‘From the River to the Sea’, and directly expressing support for organizations like Hamas, but by and large hate speech laws have not been abused. They’re mostly used to shut down and arrest neo Nazis and xenophobic rioters.
Israeli propaganda money is much better spent on convincing business leaders and the public at large that criticism of Israel is anti-Semitic than it is at trying to convince constitutional lawyers.
I think you misunderstand the point of hate speech laws, it’s not to not hear it, its because people rightly recognize that spreading ideas in itself can be dangerous given how flawed human beings are and how some ideas can incite people towards violence.
The idea that all ideas are harmless and spreading them to others has no effect is flat out divorced from reality.
Spreading the idea that others are less than human and deserve to die is an act of violence in itself, just a cowardly one, one step divorced from action. But one that should still be illegal in itself. It’s the difference between ignoring Nazis and hoping they go away and going out and punching them in the teeth.