They never will.
Nope - especially since several Muslims have equated Atheists with Crusaders, and that they should be treated as such.
Frankly, I really don't care one way or the other about atheists and their beliefs (or lack thereof) but it seems that the self appointed mouthpieces of the atheist cause aren't so noble in their convictions when it comes to calling out any religion other than those based in Christianity.
Athiests.org current ad - "37 million Americans know MYTHS when they see them" contains four images;
Poseidon
Jesus
Santa
Satan
The first is from Greek mythology, the other three are tied to Christianity. Why didn't the organization use pictures of a menorah, Mohammad, and Buddah to go with Jesus ?
All of these religions have coinciding holidays now - (Christmas, Hanuka, Eid-al-Adha, & Bodhi Day) so, why not add them too ?