Doesn't make you any less wrong though. You have to provide some proof of the Scions, or us for that matter, being tempered though. Remember Her first words to us.
The whole point of this expansion was that while our lives do not matter to the Ascians. Our lives matter to us. To Alphinaud, Alisaie, Ryne, Y'shtola, Urianger, Thancred. To all the peoples of the Source, the First and all the shards that are left. That's not even going into that they may have made it impossible to make their world whole again thanks to their utter incompetence turning the 13th Shard into a literal demon dimension and nearly doing the same to the first. This tells me that they are just bumbling through not even giving a thought to what the heck they are doing or how many "Inferior" lives they snuff out. They're like psychopathic Mr. Magoo's at this point. It's not even like they are all that either. Gaius has killed, probably lesser, Ascians. And You are 2/3 on the Unsundered ones.
As much as I like Emet I have to admit his big speech in Amaurot falls flat on it's butt for 2 reasons
1) His point that the "Inferior races fight and War and really totally hate each other" falls flat because, unless he's forgotten, him and his are responsible for 90% of the conflicts on the source that we know of. And judging by the meddling on the first, the other shards too. Did he also forget that he himself was responsible for 2 of the most destructive, expansionist and warlike empires the source had ever known.
2) His talking about how "we wouldn't sacrifice half of ours to save the other" is outright BTFO'd by the Crystal Exarch even being there. He literally comes from a future whos people sacrificed themselves to give the people of another possible future a second chance.
It's also why his broken glass analogy doesn't even make sense. Have you tried to fix a broken mirror? It's nigh impossible.
Since you ended on a philosophical point I'll end it on one of my own. The Ends Don't Justify The Means.