Atheists and fundamentalists are just the flip sides of the same coin of stupid.
I've said the same here in this forum.
I think that probably most atheists don't spend any time on religion. But there's a minority of atheists who spend almost all of their time talking religion. And they tend to insist of a literal interpretation of the Bible and by extension claim that Christianity teaches slavery and disrespect for women's rights and all sorts of archaic nonsense. But, it all begins with a literal interpretation of scripture.
So, the difference between evangelical atheists and fundamentalists is merely in the total rejection or adoption of scripture. The approach to scripture is the same.