Pretty much all of this can be claimed for Rhodesia, and we saw how that worked out. Global opinion turned decidedly negative on Israel after the Gaza War, even among Evangelicals in the United States. If the Taliban victory results in an Islamist Indonesia and Malaysia throwing their weight behind the Anti-Israel factions in the Middle East, that's a huge shift in resources, raw military power, etc against Israel. You don't have to be better than your opponent on the tactical level, you just have to drown them in resources.
Honestly going to be wild if the Taliban humiliating the United States in 2021 results in that Palestinian prophecy of defeat of Israel by 2048 being made into a reality.
Which Gaza War specifically are you talking about here? And Yes, I do suspect that Israelis are going to prefer to become pariahs like Russia or South Africa were than to give up on their dreams. Or at least right-wing Israelis.