Well I imagine an attempt to ban circumcision would be immediately called anti-Semitic and then it would never happen. And that’s something nobody even wants to be accused of, so there’s less pressure to do this than there otherwise might be.

That's what happend here in Germany. There was a court case where male circumcision was ruled bodily mutilation. Afterwards they created a law to make it legal only as religious practice (after a lot of discussion).

I know plenty of people who support circumcision and exactly zero of them are Jewish. We would see a tremendous pushback on any attempt to ban it regardless of it's association with Judaism.