I see arguments of this form from Christian Nationalists a lot:
1. If we were Christian, we would ban {a bunch of things like feminism}.
2. We really want to ban those things since they're bad.
3. Therefore, we should force Christianity on folks.

This is an affirming the consequent fallacy.

Further, we don't need to force this religion to ban bad things. Christianity, as history has shown, also brings its own bad things.