What many atheists mean is though if there were no religion we would all be de facto atheists, but that there would be no need for the word.
I've had countless debates on this, here on RF, and what they mean to say and do say all the time is that atheism simply is a "lack of belief in God", therefore an infant is an atheist. That's absurd of course, as atheism is a response to theism. Without theism, you don't have atheism. You have a blank slate. You have openness. Atheism is not "openness". It's a negative answer to a question regarding the existence of God. Without the question, you have no answer.
An infant is not born a believer or a disbeliever. Those do not apply to a pre-reasoning mind. They are simply open, yet to be programmed with beliefs. It's not until they are taught by others the idea of God, that they can reason and choose to either believe or disbelieve in it.
After all, we don't have a word for someone that believes we need air to live, in opposition to those who think we don't, because there aren't any of the latter group and the subject doesn't arise.
We have a word for those who don't know what air is as a concept. It's called simple unawareness of air as an idea. A frog doesn't believe or disbelieve in air. It doesn't use conceptual thoughts. Neither do infants. They just breathe, unaware it's even a "thing" at all. You don't believe or disbelieve in something you have no conceptual understanding of.
So an atheist, most clearly has an idea or a concept in mind that they disagree with. It's not just a lack of awareness of the question.
Yes, I've experienced that. And Christian sites where people say that all atheists should be shot and everyone cheers.
Indeed. Flip side of the exact same coin they all are.
I like the saying, you can take the boy out of the country, but you can't take the country out of the boy. Even if these same Christians lose faith and become an atheist, that doesn't change who they are and how they hold their beliefs. All they've done is simply switch what they believe in. Not how they hold those beliefs.
They don't quit being proselytizing evangelicals, simply because they now believe Science and reason has all the answers, instead of the Bible and God like they used to believe. It takes
a lot more to change that than simply having better "evidence".
I have come to see those who call things woo woo, are very allergic to things that challenge their boxes of reality they like to fit it into. It's a lot like those who dismiss the "heathens" as "sinners". It's says more about the person who says it, than anything else.