You make an ultimatum, you better be ready for the consequences. You bet that removing support from Israel would get the Dems more votes than it would lose them, net. The Dem campaign disagreed - rightly or wrongly, it's uncertain, but probably wrongly.
Now, because of that game of chicken you played, Donald Trump is discussing how bigly he's going to help Israel genocide Gaza and the West Bank, millions are projected to die from the aid cuts already executed, immigrants are being rounded up in concentration camps, and the death penalty is being discussed for LGBT folk.
Welcome to the consequences.