They said they were. They also said they were peaceful and democratic. Read "The Manifesto in Practice" section of your link before you take what the manifesto said at face value.
Strong “feminists” that demanded the purpose of women was to stay at home and raise children. Most of Asia had suffrage for women much before the Western world but I would not call them strong feminists.
Nazi Germany took women backwards. Nice revisionism there.
> The policies contrasted starkly with the evolution of women's rights and gender equality under the Weimar Republic
> Women in Nazi Germany were subject to doctrines of Nazism by the Nazi Party (NSDAP), which promoted exclusion of women from the political life of Germany as well as its executive body and executive committees.
> the Nazi regime only permitted and encouraged women to fill the roles of mother and wife; women were excluded from all positions of responsibility, notably in the political and academic spheres.