You're only flippant about Israel because you're confident Harris will win. I'm going to laugh at all the liberals if Trump wins a second time because you didn't take the concerns of the youth vote seriously and thought you could appeal to enough moderate Republicans.
People who give a shit about Palestine (and I find it weird you never actually used the word Palestine) will not take the course of action that will make things significantly worse for the people in Palestine.
The people who do nothing about a situation are still better than the people who want to make it so much worse.
And the US could make things worse by reducing what limited restrictions exist on how those arms are used. Guess what will happen if Trump becomes president?