I disagree. I do not think knowledge is required for a change of heart, I believe God does it for us.
I still don’t see why the need to tell everyone how and what they believe.
Ordinarily it is, although, of course, God points us toward knowledge also. For example, people choose to be firefighters, or monks, or bowling alley operators because they know something about firefighting, monasticism, or bowling.
The need to tell their story is indeed a characteristically Christian mindset. That is, I think because our religion is based on a historical event rather than on some speculation. Conversely, militant atheism has always been anti-Christian and therefore was directed primarily at the Christians. Hence the need that the Atheists feel to offer an alternative "story".