That doesn’t surprise me at all. Islamic radicals aren’t that different in belief system from a lot of Christian nationalists.
We have all seen family portraits where people pose with American flags, bibles, and guns.
American Christians talk about how the woman/wife is subservient to the husband, how women should stay at home and forego a career and perform traditional roles at home. Many denounce and try to restrict contraceptive access. Many insist that women should/should not dress a certain way.
American Christian talk about how being gay is a sin and how America is a Christian country, not a secular democracy, how we need to have the Ten Commandments in school and in government buildings.
American Christians even grow beards, wear tactical/military-style gear, and drive pickup trucks just like Islamic radicals! (Okay that last one is a a half-joke but it’s kind of funny how the similarities bleed into the aesthetic).
If it looks like a duck, walks like a duck, quacks like a duck…