Some Jews....I have no clue how many....supported Hitler early for the reasons you wrote
In 1935 they were disenfranchised so it became mute....by then I’d guess most who had had buyers remorse
More interesting are the mischlings who survived in the military and politically as documented half Jews
Racial or ethnic purity is a difficult road even for isolated cultures
Even Israel battles who is or isn’t Jewish....they research this diligently from Ethyopia to Khazaria
Only in open borders USA is it frowned on to be predominate race or culture
In fact demonized as the enemy from whom to seek redress
The first election that Hitler won was in 1933, where he won 1/3 of the electorate. There after, when he took over the BUNDESTAG. Winning 1/3 of the BUNDESTAG gave Hitler the majority.