The more I think about it, the more I tend to agree. We atheists aren't going to stop being atheists but we certainly have given up a lot of argument ground in order to have an argument at all. The religious position has no ground whatsoever so there's no real debate where the debate should actually take place.
Atheist has a lot of baggage for meaning nearly nothing, and in reality the lack of something.
Frankly, Sam's right. Arguing against atheism should be an incoherent concept rather than the best way to defend the faith. If they were asked to put up or shut up rather than allowed to constantly shift the burden of proof by attacking something which means doesn't believe. His wording is a little poor and raises some hackles... but he's right, atheists are in a much stronger position on every issue than we give ourselves credit for.
--- You have no evidence for this God character and it isn't a reasonable thing to believe.
------ We'll you're just an atheist!
What does that actually have to do with it? Why qualify it? Why justify it? Why defend it? Why not observe the truth as Sam put it so well in Letter To A Christian Nation, "Atheism is nothing more than the noises reasonable people make in the presence of unjustified religious beliefs."
Religious people have honestly been using their cookie-cutter flawed knockdown arguments even without knowing the arguments presented to attack a 'lack of belief in God'... and their arguments never have the slightest bit to do with presenting evidence for a god or showing that it's the smallest bit rational to believe. -- We need to dam that hole.