I think some of the confusion originates from the fact that scientists like Dawkins and PZ Myers write about both evolution and atheism.
It confuses some people who end up conflating the two topics. Atheism requires evolution - if the diversity of life cannot be accounted for by naturalistic explanations there must be a designer - but theism does not require creationism. Theistic Evolution is an intellectually respectable position.
The vast majority of the thousands of scientists working in fields related to evolution never comment on faith. Dawkins gets into it because of the dishonesty of creationists who lie to children.