Every movement to oppose Christianity had its place. In the 80s they called themselves Satanists, even though they didn't believe in a literal Satan. In the 2000s we saw the introduction of "militant" atheism, externally dubbed the "new atheists." Now we have a new generation of ex-Christians who can speak to conservative Christian beliefs because they were able to get out. And they can remind everyone that it wasn't easy.
I am still a "militant atheist" in that I'm willing to speak my mind. I don't bring up my atheism unless someone makes their religion my business. The same for these people.