[PurpleBoxDragon]

>It is likely easy to pronounce in that person's culture, just not for you.

Often names will live on long after the family has left the culture. In my own case, my original family name was difficult for anyone in my own family to pronounce. Some number of generations ago (all records are lost so this is mostly an assumption) the name itself was Americanized so that the kids who never grew up in the original culture nor who knew the language could pronounce the culture.

>because people do not control their names, just as they don't control their physical features

This one also stands out to me because there are numerous physical features or other uncontrollable things which our society, to some level, tolerates judging or making fun of. Being short. Being bald. Having a disgraced member of society as a family member (someone who isn't just a criminal, but committed a crime that is harshly judged by society). None of it is fair, but it is still allowed to a large degree.

Even more complicated, when we get to personal relationships, judging based even on things like ethnic history is somewhat allowed. Part of me wonders, if I can judge someone I consider acceptable to pair bond with on some criteria, why can't I also use that exact same criteria as a source of humor? If I can't use it to do little things like make a joke, then it seems even more wrong to use it to make larger judgments of a person.