When Mormon leaders call themselves "prophets" and claim to speak in the name of Almighty God, they better be held accountable for ALL their embarr***ing, intolerant, and racist comments.
I don't think so, since LDS prophets never claimed to speak for God 24/7. Not everything they spoke was revelation; Joseph made that clear.

Plus, I think people like John Calvin were pretty sure that they were being inspired by God, even though they didn't call themselves prophets. Many people, even today, believe that Calvin was inspired in his interpretation of the Bible. Same for Luther and Wesley and many others. My great great Grandfather was a follower of John Wesley, and he sure did believe he was inspired by God.

There is clearly a double standard being employed by critics of the LDS Church.