As far as I can make out, everyone who claims that Islamist terrorism is a genuinely significant threat to the survival of Western Civilisation falls into one or more of these three categories:
1) They are a professional liar (politician, spy).
2) They have a direct personal interest in persuading the public that there exists a terrible threat that only they, with the help of copious amounts of public money, can tackle (politician, spy).
3) They have access to no evidence other than that provided by the politicians and the spies, which they believe (everyone else).
In the absence of any evidence for a serious terror threat other than the word of professional liars who stand to gain from making us believe there’s a serious terror threat, why would anyone join the camp in point 3? Very mysterious…