So, is the OP concerned about, for lack of a better term "theonormativity" being applied to atheism as a theology itself? I mean, I guess I could see where that is a bit strange, but I mean people like labels, and theistic people do certainly seem to give much more credence to atheism when they view it as just another theology, not making a distinction between it or Hinduism, Islam, Buddhism, etc
I mean, when I have children I suppose calling them "atheist children" is kinda superfluous but, at the same point if it would allow them to have their lack of religion taken with the same level of seriousness that having a different faith does, then that seems hardly to be a bad thing, I wouldn't want children of mine seen as "ripe for theological teachning" just because they didn't have a religion. When I was a child, I encountered lots of pushy Christians (I am sure it would be the same with any majority religion if I lived elsewhere) who upon finding I was an atheist would try and "save" me, but wouldn't bother trying to "save" the Jewish or Muslim children, I wouldn't really wish that experience on others.