Hmm. Solid argument I can't punch holes in.

It is easier to say someone has no soul when they do things on a continuous basis that goes completely against the Human experience of learning to raise frequency thru love and understanding. Those always destroying such are seen as being without a soul, but you're right: it removes a measure of culpability to so easily cast it in a focused light. Everything is a choice, and some choices are evil. Evil spans a broad spectrum. It should be recognized and dealt with as such.