I think sex plays a significant role in recruitment and conduct thereafter. Islam has weird rules of sexual conduct among muslims themselves, but when it comes to infidels anything goes. Sexually frustrated young males are willing to undertake dangerous activities in hopes of taking sexual slaves who can be treated in the most barbaric fashion without any fear of religous sanctions.
I agree with both your thoughts.
Women are nothing more than property for men’s pleasure under this religion. They think nothing of killing women in barbaric ways for not submitting to them or for supposed infidelity and seem to take pleasure in their murders.