i guess all the choshuv Rabbeim and Gedolim who speak in extreme terms about the aveirah of men watching women dance are not familiar with Tu’bAv.
maybe there is an explanation of this inyun that you know nothing about?
this is a perfect example of people who do not understand Torah concepts throwing around a fact here and there that they “learned”
to ask a question to a seeming contradiction is quite valid. to use isolated puzzle pieces to attack Torah values is not