“Humans murdered my parents and your mom,” Chris said, not waiting for Rory to finish. “Left them for dead in the middle of a road like roadkill. Have you forgotten that?”
The dialogue goes on to state that and worse had happened to others who took refuge in Portento from the humans.
The bias against humans is rooted in fear and hate and that is a powerful combination.
Accordingly, I can't hate Chris for feeling the way he does and I doubt Rory does either.
If I was a betting person, I'd say it would take a miracle for the town to accept humans or for them to accept Rory mated to one.