What do you guys think of kummi taang theory

In this theory, it suspects that ummi is a previous reincarnation of toph, avatar kuruk's wife

It says that the reason she is blind is bcs her last reincarnation's face was stolen.

This is also due to the episode, the swamp.

It says that it's a foreshadowing of him meeting toph, but it might also be because he once knew her.

Past forward to chapter 3, in the episode nightmares and daydream, aang has a nightmare where all his friends die, and in one of them, toph's face was completely blank, just like ummi's

Although I ship toph andaang, I don't fully support this theory, but do y'all think?