The algorithm boosts the voice that create the most engagement and shareholder value. It's a perfectly objective and rational way to run political discourse. What is wrong with bumper sticker politics, they are extremely efficient.

You must be some obnoxious communist to criticize this! (jk lol)

PS: You're probably right though, and actual antisemites and fascists are the reason why the propaganda wasn't able to completely quell criticism of Israel about the genocide. So in this very rare instance we probably should thank our nazi bedfellows, otherwise Israel would kill, starve and rape Palestinians even harder.