I remember seeing a TED talk about this which very much pointed to FGM being a central african problem, yes the majority of people doing it Muslim nations, but there are christian nations doing it too like Etheopia and in places like nigeria that have diverse religious backgrounds, christians practice it too. for example, google tells me 25% of nigerian catholic women have been circumcised.

When you go outside africa, yuou find the majority of cases are eithert from a country right next door in the middle east. or from somewhere further away, but by people who have emigrated from said central african or middle eastern country.

There is Indonesia, with its high fgm rates exclusively among muslims there, efforts have been made to regulate/ban/mitigate (making the act symbolic, rather than actually physical) over there and some other nations would do well to nose over their efforts.

Thing is, fgm predates both islam and christianity. And its a mistake for anyone to attatch a specific culture to a specific religion. Thats as accurate as attaching a specific proffession to a religion. Oh my car mechanic is Jewish, therefore all Jews are car mechanics, crikey, Israeli cars must run forever. No it means the manufactures get lazy because they assume everyone can fix even complex faults, ah but they won't be able to get away with that, they are all trained mechanics so they could spot lazy design a mile off and vote with their wallet.

What a ridiculous discussion eh? well its no less ridiculous than when somebody invokes 'muslim culture' as a thing in their argument. Anyway, FGM is a cultural thing, not a religious thing.