I think this exchange is helpful to read for two reasons. First, it highlights a common misconception of many atheists that religious beliefs are so shallow that we can simply choose them. As I've written before, one's religious beliefs form the foundation on one's worldview and worldview is our foundation for how we understand everything else. Everyone has a worldview and even if atheists want to deny they are making any claim that needs defending, they certainly are doing so.
Secondly, the exchange will hopefully show how online interactions can be conducted in a respectful way while still making a point. I think I got my point across, even though South Humanist didn't choose to accept it. That's fine. The objection is diffused and I've shown that one can hold to a belief without having to check every option available. Such a position is a form of the genetic fallacy and should be rejected.
Here is the Twitter exchange: