So I had a big brainfart in my little post about that Zelda theory. I fixed the original post now, but wanted to post about it separately.
Basically, I for some reason said that the Wind Waker timeline is the one where the Hero of Time was defeated. It isn't though, the Wind Waker timeline is the one where the Hero of Time defeats Ganondorf, but does not return back in time to properly live out his whole life.
I do know better than this, but it was a random brainfart on my end.
It doesn't actually change anything about the theory I posted, since the fact remains that the Rito cannot exist in the Child Timeline according to the current lore of the Zelda franchise. I just wanted to clear this up before it triggers someone.