"I agree that when Bevan was a new MP, he was briefly attracted to Mosley's arguments"
Good God, the arrogance! So you 'agree' that something which happened, did in fact happen. The past is fact. It's not waiting for you to condescend to 'agree' to it. LOL.
"When Mosley quit the Labour Party in early 1931 to form the New Party, Bevan refused to join him. By 1932, Mosley's New Party had migrated from the left over to the far-right of British politics and became the British Union of Fascists. Bevan's past association with Mosley would be used against him in subsequent years by his political rivals. During the 1930s, Bevan was a staunch anti-fascist and anti-Nazi. I do not know of any occasion when Bevan voiced support for Hitler or the Nazis."
Congratulations. You have successfully demonstrated that you can copy-paste a section from Wikipedia's entry on Nye Bevan. For your next trick, how about cracking the spine of a book? I would highly recommend "Nye" by Thomas-Symonds, which has a very well researched section on the early support many Labour ministers voiced for Hitler's employment policies. Because, of course, the Nazis were the National Socialist party. Please don't make the rookie mistake of assuming that Nazism was a predominantly right wing ideology: it adopted many far well established elements of Left Wing thought, including improved workers rights and job creation, heavy pressure and taxation on large corporations, eugenics, and, of course, rabid anti-semitism.
As recently as 2019, Rebecca Long Bailey was calling for a national socialism, which she called 'patriotic socialism'. The most authoritarian impulses live on the Left.