The uncomfortable position a lot of atheists on the right (myself included, though I no longer call myself an "atheist") find themselves is that they are freeloaders within a culturally religious society that is tolerant enough to put up with them.

When they are in a society that does not put up with them...well we see the consequences in this interview. It's easy to defend Galileo when you aren't the one standing before the Inquisitor.

So maybe if atheists want to continue not believing in God they could at least defend their fellow Christians' tribe and its culture, which is apparently the only religion willing to entertain its subversions.