I think you're asking a genuine question so I'll give a genuine answer - because people do not control their names, just as they don't control their physical features or ethnic history. The names that are "easy" are typically names that stem from the English language.
Just as saying you feel "uncomfortable" around a person of color or someone wearing religious headgear is a microaggression, so is making fun of someone's name because you find it difficult to pronounce. It is likely easy to pronounce in that person's culture, just not for you. And they've probably heard a million jokes about it so are unlikely to find it funny. Therefore your "joke" provides humor to you and others who feel like you, at that person's expense.
Yes, you can legally change your name but it takes a lot of time and effort and could cause you a lot of grief with your family and professional confusion.
Just as saying you feel "uncomfortable" around a person of color or someone wearing religious headgear is a microaggression, so is making fun of someone's name because you find it difficult to pronounce. It is likely easy to pronounce in that person's culture, just not for you. And they've probably heard a million jokes about it so are unlikely to find it funny. Therefore your "joke" provides humor to you and others who feel like you, at that person's expense.
Yes, you can legally change your name but it takes a lot of time and effort and could cause you a lot of grief with your family and professional confusion.