Looking for an atheist response to "The Alarming Truth Behind Anti-Mormonism"

Link here: http://happiness-seekers.com/2017/01/02/the-alarming-truth-behind-anti-mormonism/

While the article is aimed mainly at ex-Mormons, the author goes into a frenzy trying to discredit "atheistic moral philosophy" in section 3. Just wanted your opinion as a fellow skeptic.