The thread though is more broadly about AI in general. My remark was wrt the fact that talk of "souls" in context of AI usually boils down to drawing a red line between what AI could be even in principle, as humans (i.e. "no soul" -> "it's not actually intelligent" etc; some folk use "no qualia" to the same effect, and it's the same argument in disguise). The problem with it is that there's nothing about either AI or human intelligence so far that requires a concept such as soul, so religion aside, the only reason to reach for it is if you're trying to draw that line and running out of arguments as to why it should be there.