Using religion as a shield to promote intolerant beliefs should not be tolerated. Either the religion evolves or we turn it into a relic of the old days like Greek myths.
I definitely agree with you if the person in question is trying to make the behavior they don't like illegal. There really isn't a place at the discussion table for such people.
But let's use a comparison here to my best friend, who happens to be Hindu. He believes that eating meat (not just cows, but all meat) is immoral, because his religious beliefs tell him so.
However, he has no interest in forcing others to agree with him, and certainly no interest in seeing this behavior made illegal. He's still my best friend even though I regularly engage in behavior he deems sinful. Is that okay? Are you allowed to think someone is wrong or that someone is engaging in evil behavior, as long as you don't try to make that behavior universally outlawed? Or is my friend wrong, too?
Please note these are honest questions intended to further discussion.