i didn't think it was necessary to get into this, but one the reasons it is viewed as offensive is the sheer euro- (or white-) centrism of it. what european people are saying is, they are the normal/universal humans and all others, are marginal, not-normal, not the standard. it's like thinking white skin and straight hair are normal, and dark skin and frizzy hair as the other/marginal/abnormal. just imagine all the other implications of that kind of thinking.
Yeah, I know that... and Conte is saying in the story that he understood it's wrong ("now we know it wasn't a great idea and we regret making you feel that way") . So, what else do you want him to do? Kill himself?