It's actually objectively true. All the US did was recognize them as a country, negotiation would have done nothing. Thee had been plenty of negotiation for many years since way before the Holocaust or WWII. The Arabs and Jews were effectively in civil war, every compromise was rejected no matter what, which is exactly what the Arabs said they would do. There was never going to be a one state solution, neither side was willing to do that, decades of mandate histoiry show why that is a ridiculous idea. Israel looks the way it does because the Palestinians attacked and lost, no negotiations would change that, even if the UN did not vote, there would still be a state of Israel, it had been brewing for decades. All the British did was punt the League of Nations question from WWI to the UN.