There are a number of reasons for this: (1) family expectations of males to go into STEM, (2) STEM is more prestigious in Asia than it is in America or Europe and (3) colleges fold near-STEM majors into STEM, e.g. an accountant here might be called some sort of engineer in Asia. I've notice this in all parts of Asia- China, India, Syria, etc. A prime example of this that China's last three presidents have engineering degrees. Only two of the 45 US presidents had engineering degrees (Hoover, Carter).
So my point is that if a lot of educated mideast males are engineers, it is more likely the radicals will be engineers too. I see nothing intrinsic in an engineering degree that would radicalize.