That Palestine would be better with Kamala is pretty much the one thing you can’t claim since she promised to do the same as the previous Genocide-supporting US President who sent 2000lb bombs (know for their enormous collateral damage) to be dropped on an urban environment in Gaza.
There is a near infinite list of things Kamala would almost certainly be better at than Trump and you went and chose Supporting A Warmongering Supremacist Fascist Regime Abroad Killing Brown Kids which something that consistently has bipartisan support in the US to the point that the US Military itself often engages in a little (sometimes a lot) of brown-kid murdering abroad.
It’s like the entire boundary of the entire fucking field is the goal and you chose to try to score by burying the ball.
There is still a difference between “we don’t plan to stop selling arms to a genocidal country” and “we’re so on board with genocide that this country commits, we’ll do everything in our power to help them, also here’s the generated video of my golden statue on top of the corpses we want to see, and I can’t stress this enough how much I want those corpses”.
On top of that, the left such as it is, have non-zero influence on Democratic party. Not a big one, but non-zero. And Palestine issue could be this pressure point, it has enough support to be one. You can’t do anything with Genocidal Donny.