Interesting point of view. However, there are two discussion points ...

* deep talk *

1.
So if an ogre were more intelligent, he would also see the difference between right and wrong in a society that has moral standards similar to ours. But what if he does things anyway because he likes it?
Then he would probably be on the same level as the stump-fucking man who knows that what he is doing is immoral, wrong or even disturbed.

Do you agree?

2.
But it would look very different if someone (human or ogres, for example) lived in a society in which it is generally okay to do such things. Because society decides what is moral or immoral and accordingly interprets its laws and regulations according to what society members should adhere to. Individuals will grow up within the framework of social upbringing with the established moral attitude and embody this to a large extent.

However, moral attitudes in society can change over time:

Example: Voyeur magazines or Lolita magazines were freely available in Germany until the late 1980s. These magazines deliberately depicted the nudity of minors. Society found this to be morally justifiable to a certain extent. However, moral attitudes in society changed and it was made immoral to portray minors naked. Accordingly, the public sale of such magazine today is unthinkable and (to my knowledge) prohibited.

So if the morality-values would change in our society and it were morally ok to behead someone and fuck the stump, would it lose its appeal for you since it is no longer a taboo?