I have a hard time with the word, "attack."
I think people learn things about the past of the church that their leaders didn't teach them and they feel lied to. When you feel lied to you try to help others...
I certainly didn't see it coming when I learned of the real way Joseph translated the plates! It wasn't taught to me that way, and I had a hard time with it for a while. I discussed it with everyone to help my testimony, and people assumed I was trying to attack the church. Not true.
Its a matter of perception.