(Edit to shrink the post down, sorry about that.)
I'm sorry you're feeling frustrated, but at least personally, I have no bias against any communities, only the game's present state and the way the developers react to criticism. Again, I'm not trying to attack you or discourage you in any way, I'm just sharing my perspective and what I believe the majority's perspective is on this forum. I don't hate that Kaly exists, my only complaint is that the narrator makes any interactions with Kaly into an instant loss with no ability to do the reasonable thing and cut her down when her intentions become clear.
The majority on this forum, (at least as far as I've seen), approach the story as you would a legitimate story. They're absorbing it, reading deeper into it, rationalizing it- and critiquing the plot holes or strange limitations put in place. The CoC2 community seem to have a very different approach, (and again, this is based entirely on what I've seen), they seem to prefer viewing it as fetish fuel and largely disposable, a waifu sim first and all the lore is there to make it more marketable or something but isn't worth thinking too deeply on. We have folks questioning the political structure, economy, and technology of the setting, trying to make it all make sense.
I don't think either side is wrong, it's that old Star Trek versus Star Wars community debate. One wants detailed, fleshed out, and logical narratives- and the other's there for the quick minute to minute thrills and feel good plots that ask you not to think about them past a surface level. Everyone's free to enjoy whatever they enjoy as far as I'm concerned, but I definitely fall more in the camp of reading deeper into things. I would like the setting and the narrative to make sense. I would like to immerse myself in whatever world I'm reading about, and think about how I'd approach life there.
TLDR; I don't hate Kaly, I'm just thinking about her whole deal logically rather than fetishistically or romantically. As you have pointed out, she is a bad end waiting to happen that will impact a very large area. She's perfectly comfortable ruining individual lives if it suits her goals, so trusting her with brainwashing spore towers isn't a good idea no matter how you slice it. Giving her that level of control over the people around her would only be for the entirely misguided 'moral good' of sparing demons, who have no souls anyway, they're just corpses with a pulse and access to the memories and carnal instincts of their former lives. Intelligent zombies. So letting Kaly do what she wants to do just because it's more merciful towards these twisted parodies of my former neighbors is just.. Bluh.. Missing the forest through the trees, letting everyone still alive down to cling onto the people that are already gone.
And that's fine. It's fine that she exists, but I just wish she wasn't wearing OC-armor and could be dealt with before she can do any harm to the people around me. Like it or not, rape, brainwashing, stripping someone of their identity is not cool. I wouldn't want my kids, my mother, my father, my brother, my strange uncle that always smells funny, or my pet dog to fall prey to demons, OR to Kaly's ball stank spore brainwashing. No matter how much she might promise not to use those on 'the innocent', she's shown that she's an end-justifies-the-means kind of girl and sees nothing wrong with ruining individual lives.
She is a monster that needs to be slain before she can hurt someone incapable of defending themselves. There are worse fates than death, and I'd rather be a murderer than someone that doomed the world to slavery and corruption.
I'm giving you my feedback and opinion on the character and her narrative. I think she needs to be stopped, and given the present circumstances, that kiiiiinda means putting her down, y'know? 'cause apparently, her balls brainwash people immediately without any hope of resisting and does so shamelessly, so she's as much of a problem as Kass in some ways and should be treated as such.
