In this video he claims that Yokudans came different universe which is why Redguards have a separate ancestry from the rest of the humans. He said when Satakal's ate their timeline HoonDing created a sort of wormhole that allowed them to cross into the the version of Nirn we all know and love.

So my question is there any validity to his statements ?

Skip to 13:50 https://www.youtube.com/watch?v=vo3gSFmS32Q