Yeah,
I agree that the comment from the Black woman was stereotyped, but a bunch of women lusting for a washing machine was a stereotype in itself. I remember in 1969 the world, thankfully was changing. Suddenly there were Black actors on TV who weren't maids or stevedores. In one year, we had Flip Wilson, Diahann Carroll, Chelsea Brown; all young, hip and not wearing uniforms( well, Diahann was a nurse on her show).
My Mother was in the advertising business and finally Black people were being recognized, by an exclusively white business, as a powerful customer base worth soliciting. A lot of businesses, artists, copywriters and art directors frantically crash-coursed themselves in "Blackness". I remember my Mother suddenly drawing Black models for her Simplicity sewing pattern ladies because they had been, pretty much, all white up to the late Sixties. That Pattern Company caught on a little ahead of schedule. A lot of mistakes, both ignorant and innocent, were made but the force of humble home economics marked a significant and substantial win for civil rights. As George Jefferson once said, the most important color bigots respond to is "green".