Did Metieon do anything wrong?
Well now, let's be honest. Yes! Whether by her hand alone or by her hand along with her sisters, many worlds died. We're talking trillions of lives conservatively. I really can't let her be separated from those actions. That's just cold, hard fact. These things happened. She had a hand in it. She did plenty wrong.
But really, I don't think that's the bigger scope question.
How much responsibility does she bear?
This is where I really fall in line with the video. Let's review.
She was made to be extremely empathic, to the point where it could be said she only enjoyed the things she enjoyed because they were what Hermes enjoyed. With that amount of empathy, she was hit with the sorrow and despair of hundreds of different societies as shown to her by hundreds of her sisters...ALL.AT.ONCE! That's an impossible amount of grief to sort through for anyone.
After being hit by all of this, she tried to run away. She knew what would happen if she reported back to Hermes. I don't normally advocate running away as a general rule. But in this particular case, she was right. She tried to avoid what she knew was going to happen but was foiled when everyone (including the Warrior of Light) hunted her down. Her only recourse was cut off.
Finally, once given a way out by the WoL, she took it. She broke free from her sisters and even helped the WoL reach the Endsinger. She was begging for us to stop them. So as an individual apart from her sisters she joined the side of the heroes.
Now the video goes on to try to lay the blame entirely on Hermes. Insofar as there's plenty of blame to go around, I will agree that Hermes does get a fair share. But I'm focusing primarily on Meteion here. I bring this up mainly to show that however much blame we choose to put on Meteion, there are other players on the field who take as much if not more.
My view, it was Meteion's finger that pulled the trigger that destroyed a lot of civilizations. But she was a victim being led by a lot of circumstances far beyond her control.
So that leaves me with one more question.
What should the consequences be for her?
Imagine someone destroyed an entire village. Now imagine looking into the eyes of the lone survivor of that village who just lost their entire family, all their friends, all their colleagues, all their passing acquaintances. Now imagine telling them that you're setting the person free who did it because there are mitigating circumstances. Now multiply that countless times over, only there are no survivors to tell.
But on the other hand, imagine your a single program in an entire Geth concensus called Legion. You didn't ask to be a part of this group. It's how you were created. One day all of a sudden a trauma alters the database that makes up your entire species. You try to run, try to resist. But you're one small part of this whole; a whole that goes on to do many horrible things using your mind, your memories, your knowledge, your body and your name.
Now imagine after countless eons being stuck in this hell you finally managed to break free. Not only do you break free, you make it possible for the heroes to destroy your old collective. They truly couldn't have done it without you. Do you then deserve to stand trial for what happened while you were a part of that collective?
You see, this is the sticky part of the situation. I personally see Meteion as the sweet girl who wanted to be my friend. I personally spent an afternoon with her sharing stories and getting to know her. I personally saw her struggle with all the despair she was hit with. I personally saw her separate herself from her sisters and join me in the fight against the end.
I was not personally one of the ones whose society and planet was destroyed by her and her sisters.
How does a judge/jury allow such a large scale crime be mitigated in any way? How does a judge/jury ignore the hell Meteion went through, the circumstances beyond her control, how she ultimately rose above and helped stop what she helped start?