Board Thread:General Discussion/@comment-25266931-20161228230634/@comment-14138255-20170102184935

It's called progression dumbass.

You're missing the point. Humans are still life-forms, creations imbued with the light. The Grimm have dedicated themselves to destroying all creation. Why the Grimm focus on humans specifically is unknown, but they'd still attack humans anyway even if they weren't their favorite.

The Rules are slowly being revealed (or added on to), not broken.