The SSPX teaches that non-Catholics can be saved by their belief in a God that rewards. If after reading all the dogmas on EENS, they can come to that conclusion, then there is nothing that they can write about that is not suspect. There is no teaching of the Catholic Church, that is as dogmatically defined as EENS, yet the SSPX completely denies all those dogmas in their teaching that non-Catholics can be saved by their belief in a God that rewards. What is one to make of their teachings on other subjects which are still speculative like the sedevacantes question, the Vatican II church, Vatican II, the validity of new bishops and priests, and in this case Creationism?
Well, my answer is that I totally dismiss everything they teach, just like Fr. Robinson's book. I would not read the first page. The SSPX are blind guides and dupes, at least those that teach that non-Catholics can be saved by their belief in a God that rewards, I have not found one SSPX priests that does not go along with the teaching that that non-Catholics can be saved by their belief in a God that rewards.
They are so blinded by their love of smells and bells that they do not realize that Vatican II was all about brainwashing Catholics to believe that non-Catholics can be saved by their belief in a God that rewards.