Uhhhh, no......
The Soviets have long insisted that Lend-Lease aid made little difference. Newly discovered files tell another story
I didn’t say it would have been cheap or easy. The Russians had already moved factories into the Ural mountains and were prepared to fight all the way there. And Lend-Lease did help them and give them more options.
But they still did the lions work and the lions share of beating the Germans. If we had never invaded in the West, the Russians would have eventually won.
The only fly in that would have been Germany developing the atomic bomb. That would have changed every scenario.
After Soviet armor was destroyed during the opening months of Barbarossa Allied Lend-Lease aid provided the material for their armor units until the Soviets got tank production going in the Ural mountains. The engines that powered the tanks used American supplied aluminum.