OP I am also not a fan of the livestream. (But I am also not a fan of reincarnation) I just dont like that when we lose a character, especially one you truly liked, that this person is probably gone forever and maybe their aether is used for someone else. Its great for the reborn person but it would still mean that you will lose someone forever. So for me I just accept my own head canon that the scions dont fully understand it and that there is some kind of afterlife. For that my WoL fights on, to give to those living a better world while at the same time having the hope to see those beloved that died along the way again, when its their time to go.

I just dont like it if games explain it too much. Just let it be ambigious so that everyone can interpret it for themselves.