@HumanServitor
This is very self serving: first of all because the impulses that elected Trump are much older than the current invasion, and Biden was elected to fight them. In the three years since he's largely failed at beating back Trumpism, and that colossal failure has nothing to do with the current conflict.

Secondly, Biden is the one willfully ignoring desperate pleas for some restraint: I can see evidence for at most one meeting with pro-palestinian leaders, while he personally attended a war cabinet meeting with Bibi and has receive many pro-Israel delegates. Faced with leadership that ignores its most salient desire, the voter is perfectly justified in falling back to the blunt force of the ballot box.

Thirdly, while it is clear that Trump would be much worse for America's influence in the world, it is not self evident that his administration would be worse for Palestine. Simply put, Trump is such a crude geopolitical actor that he would most likely provide much less political cover than Biden is currently doing (even Germany would be hard pressed to ignore IDF atrocities if it puts them in Trumps camp). So a Trump presidency would lead to an increased pressure on Bibi, which is much more beneficial than whatever small restrictions on material support that Biden currently enforces.