There are multiple Chinese surnames which map to the Latin letters Xi. Just doing some ad-hoc lookup showed me that here are at-least over 700,000 People with

There are multiple Chinese surnames which map to the Latin letters Xi. Just doing some ad-hoc lookup showed me that here are at-least over 700,000 People with "Xi" as the last name. Not including quite similar names like "Xié". Sure that there is a certain very powerful person with that name, probably mattered in making them rethink if they should use it. Still there being over half a Million people with that name is a sound argument anyway.