Consider that the text is, in fact, from the 19th century.
Also, 'Weib' is not rude in every context. "Wein, Weib und Gesang" is not diminutive towards women, but in fact appreciative (as in 'necessary for having a good time'). We have Weiberfassnacht. And then there are the dialects, in which "Weib" often is indicative of a homely, loving relationship (-> bairisch, Swabian). Context matters.
Also, 'Weib' is not rude in every context. "Wein, Weib und Gesang" is not diminutive towards women, but in fact appreciative (as in 'necessary for having a good time'). We have Weiberfassnacht. And then there are the dialects, in which "Weib" often is indicative of a homely, loving relationship (-> bairisch, Swabian). Context matters.