DY: The (admittedly stupid) diyuk was a roundabout way to make my point (which hasn’t yet been convincingly disputed here). The point: Oz Vehadar Levusha should absolutely NOT be learned as a practical manual, particularly for young american girls.
The two reasons for my opinion have been discussed but I’d like to reiterate them.
1. It’s not halacha
2. Even if it would be partially or fully halacha, it is nonetheless counter-productive.
[It might be something like the equivalent of starting groups for young boys teaching them from a sefer which advocates not to walk daled amos without thinking in learning. There is a source that such behavior is a good thing but see points one and two above.]