When you compare Biden to Trump vs. the effects on the Palestinians, were Trump president again, he would not just help the Israelis exterminate the Palestinians, but encourage them to do so quickly- as he’s already told Bibi to “finish it”. So your dichotomy is more than a bit disingenuous .
If the choice is between genocide and genocide + fascism, and there is no viable option 3 without genocide, then the argument is still embrace the genocide or democracy ends. The alternative is embrace genocide and who really needs all this democracy anyway?