I think the great thing about the theory of evolution and a large majority of scientists, is that the scientific community still labels it as a theory. Although well supported with evidence they are still accepting the possibility of it being false (ie not the law of evolution).
There are people such as agnostics whom decide that they do not know which is certainly a valid. However it seems to me that all religiously passionate people refuse to see the evidence and instead refute anything that would perhaps prove it or change the story that the bible presents. The fact is the bible was written by man and not a god. Therefore it is prone to the same faults and inaccuracies that all humans are subject to.
I find this both an interesting and humorous piece of material you have extracted from this website. For one atheism is in no way dependent on evolution, sure to provides an answer to how humans might have come to be but atheism itself is the lack of a belief in a god, it doesn't say anywhere in the 'athiests bible' that we require to explain or even believe scientific theories.
Also through this extract it constantly explains how there is no evidence to support evolution, but I would retort with the same statement about christianity and the bible as well as almost all other religions. I fail to see how Scientology is any less ridiculous than Christianity.