For anyone interested in Roth's actual stance...
Roth believes that the best way to gain rights for women is to take pre-existing human rights laws that countries apply to men and to then ask for those laws to be extended to women. Not extending them to women can then be said to be discriminatory.
So, for example, if women are being murdered in DV situations, the best response to that would be to get countries to prosecute more men who murder women and girls in their family under right to life laws.
Feminists generally disagree, and say that women need their own specific rights, and support things like CEDAW and the gendered trafficking protocols because women are more likely to be victims of some forms of violent crimes and the only victims of others.
To word an introduction to trafficking in such a way as to give an example of it happening to men, some examples without mentioning gender and then extend that out to discussing female victims of ISIS is then wholly consistent with Roth's stance on women's rights. It is not indicative of supporting gendered human rights conventions and protocols, which indeed is not his stance. It is placing the horror of ISIS slavery within his preferred political context.
His stance on non gendered ways of advancing women's rights is discussed in the book the Idea of Prostitution, by Sheila Jeffries. Many people do share that stance, and many do not (particularly on here).