Winston Churchill was a brilliant man but the idea that you could reintegrate the Jewish people that survived back into the Soviet block of countries and Germany in the immediate post war period was just fanciful.
Admittedly resettling the displaced Jews in Palestine was easier in the short term, and after WW2 there were many conflicting priorities. But often short-term easy solutions are not best in the long term.
The full consequences of Roosevelt's acquiescence to Hitler's "First Solution" (ie expel the German/Austrian Jews to Palestine) are yet to be seen. As Churchill predicted, it would cause a century of wars of which we are just part way through - it could well yet eventually be considered by future historians to be the cause of WWIII.