What I am seeing is that atheism means different things to different people
Well, there are different types of atheism, there is a spectrum. But it is just differences in degrees. You aren't likely to find someone that calls themself an atheist that goes on to say they also believe in a god. That person would best be describd by another title: Crazy.
Even those that say, they believe there is a God, and that there is a Jesus, but have different ideas on the death penalty, sexual issues, abortion.
That's why I specifically said "Southern Baptist", not "Christian". There are varying degrees of Christianity, but they are all part of a belief system. If someone is a Christian that thinks there's nothing wrong with homosexuality, they are choosing to pretend their holy book wasn't serious when it said homosexuals will be destroyed by god. There is no such system of beliefs for an atheist to need to circumvent. That's why we are so insistent atheism isn't a belief or a belief system, it's a non-belief.