At some point, a set of beliefs is so harmful that it would be borderline-unethical not to criticize them. Would you have made a similar comment if the Church of Latter-day Saints refused to recognize mixed-race marriages? In case you didn't know, such racism was LDS dogma until 1978.
This project is impressive in its comprehensiveness, and I'm glad an organization has undertaken it. Still, the discriminatory, homophobic dogmas of the LDS church cannot be ignored, and criticism of these beliefs should not be discouraged. Only through discourse can they be challenged and obsoleted. The sooner that happens, the better.