I agree with the OP, that Richard Dawkins is a complete hack when it comes to religous matters.  It is not just that Richard Dawkins has no qualifications in philosophy/theology, it is that he makes no real genuine effort to understand what his opponents are saying.  That I think makes him little more than an anti-religious bigot, someone who is not sure of exactly what it is that they dislike, but know that they dislike it intensely.
A simple example of the complete ineptitude of Dawkins in not just theology, but also the philosophy of science is when he argues (in chapter 4 I think) that God cannot be an explaination for anything, because that the raises the question of who created God.  It is inept theologically because just about all religions hold that God exists out of logical necessity, and is not created in any sense.  This is not just theological hand waving, as this, up until the 20th century, was also what atheists believed about the natural world, that it existed necessarily, and therefore needed no God as a creator.  It is only with the advances of cosmology that have shown that universe cannot be past eternal that have caused some atheists to give up on this view, although many are still trying to cling to it in some sense.  In any case to present “who created God?” as a serious argument show a complete unwillingness to even consider the basics of theological belief.
Secondly  his whole position here, if taken seriously undermines all of science.  Dawkins seems to think that explainations, in order to be valid, themselves must be able to be explained.  However that very quickly leads to an infinite regress of explainations such that nothing can ever be explained.  So evolution would require an explaination, that itself would require an explaination, and so on.
The often quoted “Courtier’s reply”, when you really think about what it is really saying, demonstrates the “ignorant and proud” stance that seems to be the hallmark of Dawkins and his supporters.  Essentially it is saying that “they don’t need no fancy book learnin’ to know that religion is bunk!”.  It really is at heart a statement of anti-intellectualism that is a complete mirror of the stereotypical religious fundamentalist position that something can be dismissed without understanding it because it is the work of Satan or something.
I think the most telling thing about the God Delusion is really the lack of support, (or indeed any support) that the arguments therein have recieved from the philospohical community.  No philosopher, atheist or otherwise, seems to be willing to defend the “central argument” of Dawkins book, namely his Ultimate-747 gambit.  The arguement has recieved widespread condemnation, even from atheist philosophers, yet none are willing to stand up and defend the argument in an area where there are many defending arguments against the existence of God.  That, I think speaks volumes of the percieved quality of the book amoungst those who are experts in these types of arguments.
Calculon.