Witchcraft is pluralistic – our lack of ego about the veracity of our faith, and the admitted differences within the faith in terms of belief, mean that acceptance of other faiths is built in.

I don’t think comfort with pluralism necessarily prevents a religion having missionary tendencies – it may lessen the urge. A need to convert others can perhaps be boiled down to discomfort with alternative belief systems; uncharitably, I’ve always suspected that the requirement to think about other faiths makes some people highly uncomfortable. Hence the imperative to attempt to convert. Like an oyster turning an irritating grain of sand into a pearl, perhaps!

Is it that a religion not comfortable with pluralism would seek to reduce it by converting everyone to their religion? Or would comfort with pluralism make someone more likely to interact with people of another religion?

I could see it either way.