I think perhaps the thing that frustrates me most about evangelical atheists is that they are quite willing to buy in into two-bit, popularized notions of the divine rather than taking the concept seriously and examining it rigorously. They seem to keep watch on a peculiar style of reactionary, unreflective Protestant Christianity and that apply that style wholesale to all religious people. It is straw-manning at its best.
But to be fair, evangelical Christians are quite willing to buy into two-bit, popularized notions of psychology. Perhaps it is the nature of those who are interested primarily in convincing you that they are right, that they do not stop to think about what they do not yet understand.