Well I hope you would never advocate a religious rights suit if in a different case a different religion wins out.
Part of living in a democracy with religious freedom means believing that all religions are treated equally by the government.
If we live in a democracy where all religions are treated equally, no one has a problem believing that, since that is the reality. The question is what our approach should be.
If in a democracy everyone has free rights to live with any willing adult, does that make it OK? A democracy is a form of government, not an intrinsic truth.
Actually, because we live in a democracy, therefore we also have a right to advocate for our rights (surprising, isn't it?). And we are convinced that we got it right. So we have no problem pushing for an amendment based on halacha.