Alas, Old G, your prejudices are showing again. Do you not know what dogma means?
I have explained it once, so has birdie. Let's try again:
Religious preaching is dogma. It comprises a set of beliefs which cannot be justified by fact, evidence, argument or reason. Nor is there any pretence that it can be. A religionist believes as a matter of faith without requiring justification. That is dogma.
Atheism is the result of applying fact, evidence, argument and reason to that dogma and rejecting it for very good expicable reasons. It is dogma turned on its head.
This is what Dawkins did in TGD and I'm sorry, though not surprised, that you did not appreciate just how clear his thinking is and how lucid his presentation - as it is in all his books. And, of course, as Waldo says, he is far from being the first person to expose religious belief like that. I became an atheist decades before I discovered Dawkins, and then it was his books on evolution that I read first.
By all means reject and criticise atheism (though it would be nice to hear it done rationally if possible) but to call it dogma is to misuse the language.