Not sure how you got “because they can learn, they can learn to be good” as the source of the dilemma from the article. It says

In Tolkien’s Christian framework, [being open to morality, like Men] in turn meant they must have souls, so killing them would be wrong without very good reason.

It’s not them thinking and feeling that’s the problem, it’s that Tolkien believed (as a Catholic) that you shouldn’t kill things with souls.

This is a nice contrast to Frieren where demons don’t have souls and don’t seem to be open to morality, either; they understand it in order to manipulate humans but consider themselves outside its framework.

Also https://www.youtube.com/watch?v=fzG4jbFc7PI , https://www.youtube.com/watch?v=joRLqG4pRWY , https://www.youtube.com/watch?v=WXl_F3o0Xdw and https://www.youtube.com/watch?v=OZ4D2E_uLAU if you want to do it right

kokorone

My perfect god dog would never