“It isn’t tznius for rabbonim to teach women about tznius. Turns me off big time.”
Well in order for some women to get it, it has to be spelled out for them by a man. We had a man in seminary explain to us what was so bad about being untznius. (He didnt say anything inappropriate for single girls to hear) It scared a lot of girls who honestly did not know what they were doing wrong because it was never explained correctly in high school.
In high school all they did was have some 18th century looking rebbetzin get up and tell everyone how its so beautiful to be tznius and dont we all want to be tznius so badly? Frankly speaking, we didnt.