This is something I kind of think about every time I hear people going on about they hate the Emperor and it's like, yeah of course you do. He's just such a mess of a character, he keeps a bunch of mementos under Elfsong tavern just to manipulate someone if they ever bring him there in an Astral Prism, unless you like him then he's capable of sentimentality. He doesn't really care what stupid and unsafe decisions you make except until the end where he just decides he'll surrender his free will (the only thing he cares about) because he unreasonably hates Orpheus even though he doesn't really care about the grand design or anything. The character is just so bafflingly stupid. He's more of a plot device than a real character.
This is the same for most of the evil characters they're base, stupid, and bumbling. Lorroakan, Kagha, The Dumb Three, and pretty much every absolutist.
I think it's the same for the evil choices available to the player. Purging the grove makes zero since under any kind of reasoning. It's clear the True Souls have no idea about the nature of their affliction and also have no clue that you're able to shake off the compulsion (this does bring into the question of how good the good choices are when we spend an entire game murdering people who are under compulsion that we have a unique ability to free them from but that's neither here nor there). So there's clearly just no benefit from helping the cult. Letting Balthazar have the Nightsong makes no sense and is dumb. Siding with the Emperor also doesn't really make sense, I guess maybe you can make the RP argument that there's NO WAY Orpheus could trust us so we better kill him.
This isn't really like something I want to debate and I do love the game a lot, but I just feel like it really does fail on any sense of shades of gray. Your choices are to be upright and just or just chaotic stupid. So given that I mean why put in this stuff? It might be funny letting us do messed up stuff like sell Aylin or send Wyll to hell and make Karlach watch, but if the majority of these choices are reductive, in that they lead to less rewards, less companions, and less story then why would anyone choose them? I think it's really lacking when you compare it to something like the Heretic playthrough of Rogue Trader which has a number of things that feel impactful.
I don't even think there's a huge problem with not having Evil choices.
