Where are these well-educated terrorists? I only know of the duo in Fort whatsitsname in the US.
it has been documented plenty of times, here is a news story and a paper making reference to it. The ideology is the motivation here, terrorists can come from poor backgrounds or indeed middle class, educated backgrounds.
https://foreignpolicy.com/2008/01/08/suicide-bombers-warriors-of-the-middle-class/
https://jeannicod.ccsd.cnrs.fr/ijn_00000676
Living mostly in the diaspora and undeterred by the threat of retaliation against original home populations, jihadis, who are frequently middle-class, secularly well educated, but often “born-again” radical Islamists, including converts from Christianity, embrace apocalyptic visions for humanity's violent salvation. In Muslim countries and across western Europe, bright and idealistic Muslim youth, even more than the marginalized and dispossessed, internalize the jihadi story, illustrated on satellite television and the Internet with the ubiquitous images of social injustice and political repression with which much of the Muslim world's bulging immigrant and youth populations intimately identifies. From the suburbs of Paris to the jungles of Indonesia, I have interviewed culturally uprooted and politically restless youth who echo a stunningly simplified and decontextualized message of martyrdom for the sake of global jihad as life's noblest cause.