The acts of ISIS should be seen as both a unique event (as Nazi Germany was) so that we can fully give a voice to the victims and an event with many similarities to other situations so that we can both create and use international law.
Of course some of the attitudes to women held by ISIS exist in many other contexts, and trafficking is a gendered issue.
If ISIS were somehow uniquely patriarchal, the Trafficking Protocol would not predate the existence of ISIS, nor would it's official title by the Protocol to Prevent, Supress and Punish Trafficking in Persona Especially Women and Children.
If MRAs, SJWs and ISIS have something in common, it is that all undermine internationalism - the notion that for the past sixty - seventy years, we have been globally trying to build a set of human rights based on a consensus about what the world's problems are, including the oppression of women in common and specific ways.
The article acts as if we are surprised that ISIS would officially create a set of rules so at odds with human rights. Why should we be surprised? Very many people, and certainly ISIS, do not care about either human rights or international consensus building. That consensus seems to be breaking down everywhere.