Interpret grendel's observations of humans. how is this a satirical commentary on human society?

Grendel seems to find the violent tendencies of humans as illustrated in their fighting among groups, as more primitive than that of animals. Ironically, while Grendel himself will kill and eat a human, he does not organize into groups with others of his ilk and seek to hunt humans as they do to one another in war-like behavior masking their covetous motivations.