This statement seems to say as much about the sort of people who don't get non-engineering degrees as it does about engineers. In my experience, people deep into humanities fields—especially the social fields like sociology, anthropology and religious studies—are both significantly self-selected and externally selected. Perhaps even more so than engineers especially in niche fields. This selection has more of a moral, ideological and philosophical component than that for engineering. Put together, there is quite a bit of pressure against people harboring radical religious views in most of the humanities.
It's an interesting dynamic to think about.
I'm also a bit curious about what exactly an "administrative position in Hamas" entails. My sketchy understanding is that Hamas functions as more of a proto-government than merely a military organization: are they counting any role in Hamas as terrorists?