And for some reason it’s always only about Muslim women! Other religions which can also coerce or force family members to follow a certain dress code, not a single word about them.

Because right now and in Europe those are rather rare. Afaik there's some Christian groups where women always wear long skirts, but those groups tend to get called "cults" ("Sekten" here in Germany) so I don't really see a double standard there.

That said, there are surveys regarding why women wear hijabs and - at least in Germany - those say that the vast majority wears them voluntarily.