Because they present a false case that science disproves a creator. This creates a false impression in the public (especially the religious) about science and they develop a suspicious attitude towards scientists as having some kind of agenda to promote athiesm. While those convinced by it totally think Science has somehow provided evidence supporting athiesm and are essentially decieved. I have interacted with a lot of athiests who know nothing about Evolution other the “fact” that it proves there is no creator.
You know very well what the result of such widespread suspicion/misunderstanding about science is.