I didn't either...
Per usual there just seems to be a whole lot of reading things and intent into it.
I never got the impression either that we were being told that the Ancients deserved it.
The WoL is also a set character with a defined personality and views on things, it doesn't rly matter what the player thinks and players will have different views it's literally impossible to line it up with everyone.
There's still people who hate Emet to the very core and don't view him as sympathetic at all.
The problem is that the devs can't make any comments on this either because as people have proven time and time again both on this forum ( especially so ) and on other sites too.
People are totally incapable of hearing what they say without going completely ballistic and insane about it and taking it out of context and having the most bad faith interpretation of it and act like it's some personal insult directed at them.
There's just a lot of '' shoulds '' and '' maybes '' here, and there's a lot inbetween Elpis and the cutscene we simply didn't see.
The Ancients were clearly flawed and more '' human '' than they might've wanted to admit, and we can't freaking agree that climate change is real irl...
How tf would one person be able to convince everyone that there was an evil space satan causing everything?
Even if she managed to convince some people it'd still be the same situation I think with split factions and the end result would still have been the same.
It's like the Reapers in Mass Effect, Venat would've shown up to the council and they'd be all like '' ah yes, Meteion ''.
Dynamis wasn't even commonly understood or known about either, they didn't seem to have any real interest in it.
It'd be pretty crazy to believe that something that basically no one knew about would be able to do all that.
Things happened rather quickly, it's possible Hermes would've acted differently if he had more time to think about it he was essentially being very impulsive there was never really a real discussion about it.
There simply wasn't any time for it and there wouldn't either if he had let Emet take Meteion it'd just be over.
And from his pov I think he kinda had to because Emet was taking Meteion away and the choice would've been made for him.
In the cutscene after you leave Elpis he looks pretty distraught and maybe disappointed I dunno it's hard to know for sure without dialogue, but it's not like he was happy.
Edit: I suppose a comparison would be Anakin in Star Wars when he kills Windu to save Palpatine.
That was impulsive and him being very emotional too and he might've acted differently with more time to think about it.
People at large seem to have no issues accepting that Anakin was good at the core and deserved to be redeemed too regardless of him being a mass murderer ( of children included ) and having fairly similar problems as Hermes.
Much like what Hermes did lead to what we got, Anakin being impulsive and emotional in a fairly similar situation lead to the Empire and Sidious and himself becoming Vader.