1. Because Biden and Harris were, in fact, keeping Bibi at least somewhat in check. And because Biden and Harris would never sell out the very idea of Palestine, as Trump has done. And, after the election passed, the administration would have more leeway to address both sides of the conflict. You just can't embrace pro-terrorist voices during an election season. You just can't. Voters expecting them to do so have little comprehension of our system and refuse to listen.
2. Biden and Harris embraced them as much as possible consistent with winning. That's the best you're going to get as a pariah group. Did black people like it when Clinton denounced Sista Souljah? Not the ones I knew. But Clinton was way better for racial equality and justice than the GOP. Black activists realized that the best way to help their communities was not by big political campaigns, but getting well-placed in policy positions where their voices could be heard, or their views put into practice by administrative agencies. I get it -- this was a war, and not something amenable to incrementalism. But in the end, what they did was devastating to their cause.
Take another example: climate change. Climate change has probably become my #1 voting issue. When I think of the damage being caused by Trump, I think of climate change. Trump is basically locking humanity into a devastating climate change future, unless we find miracle technologies to decarbonize and/or die out to AI. Did the Dems embrace that? No -- they barely said anything about climate change. So yeah, I'm frustrated with that. But I also know that Dems are trying to do something, even if it's insufficient; and are likely to do more when they have more power; and at least they won't make that worse. It's not great bread, but it's better than eating grass.
3. I say this as someone who has zero tolerance for bullshit discrimination, and who tries to do my best to act out my principles. An Afghani restaurant opened up near me last spring, run I'm sure by refugees. My wife and I basically stopped eating anywhere else, to give the restaurant our maximum support. The food was meh. But the idea was important. Alas, it closed last week.