> If the line between life and non-life is blurry, that means there isn't a clear place for souls to fit in

If "souls" aren't defined precisely enough that there's an experiment that give different results depending on whether they exist, then the statement "souls exist" is meaningless, and anyone saying it is not even wrong.

> This isn't a big deal for science, but it's a moral victory for atheists.

Theists won't care, although I suppose some will mutter something about separate magisteria.