Honestly, Monty. You really do struggle with deductive logic and following an argument sometimes. You're like a mini version of Jorge.
You made the point that the cultural imperative to dress modestly came from Islam and Islam alone. I have just shown you a photo of women from the same region of the world who are not Muslims but who dress the same way.
If you don't get the point now, I'm not going to reveal it to you.
WES is, of course, making the accurate - albeit entirely disingenuous - point that Islam per se does not require the veiling of women. This does, however, ignore the fact that the increasingly dominant and reactionary forms of Islam such as the form of Shia practised in Iran and the Wahabbism propagated by Saudi Arabia very much do insist on veiling - be it officially or unofficially enforced - which is why you see so many women in this country of South Asian origin (where such veiling isn't really a tradition) dressing in this way.
Here are some women from that well known bastion of Arabic culture, Brunei.
brunei.jpeg
But we know that the pervasiveness of head coverings in Islamic societies is rooted in the Islamic teachings on female modesty.
Or to put it another way, just because slavery was once pervasive in non Islamic societies does not change the fact that the current use of slavery by ISIS is rooted in Islamic teachings.