Why Halachah is not (In my opinion.) a cause for schism.
You are correct that being patur does not mean it is mutar. My point is that because of the patur-chayev system we know how to deal with these sinners. But when it comes to innovations that are not purely halachic, whether it be mussar, chasidus, or women rabbis, there is no system for it. And the traditional side will have to be separated or else be carried along.
We could argue all kinds of side points here. But first, do you get what I’m trying to say and do you agree or disagree.