Universalist meaning they allow and want outsiders to become Christian and accept them as part of the in group once they convert.

Crusades and inquisition are perfectly compatible with that.

I’m an atheist by the way, I know once you express some position everyone tends to assume you have whatever standard package includes that position. I also don’t think this universalism has been a good thing long term. It united Europeans too quickly and destroyed their various separate identities while replacing it with something that is essentially a blender (in the sharp blades destroying things connotation, not the delicious fruit smoothie creation connotation).