Reincarnation does not have pertain to family ancestry. Persons do not have to be related to be reincarnated.
thats why I said reincarnation OR family ancestry, i never said they were related.

They don't bring up the fact that he was actually essentially created as a copy of Shuyin (to an extent) until later on
in x-2, it never said or hinted he was a copy of shuyin, atleast not from when I played, where are you getting that from?