The nature of the Key is such that no, having the Will to do something specific is to have the Ability to do it. Resolve is the only requirement. This has been hammered in at every opportunity.
As for Jagganoth, he's invunerable. Whatever holds him back, it's not fear. The other seven picking apart Mottom's empire would be less harmful than leaving it in the hands of a dying demiurge who might decide to take it all with her, but that doesn't really matter.
Laugh all you like: Alison passed judgment as a King. She took up responsibility with that act, and then tossed it aside. Shrinking back from the roll she explicitly, verbally assumed is an act of naked cowardice, and every outcome of her action is her responsibility.
If she had killed Mottom, that would remain the case. The only way for her to avoid responsibility for that would have been to reject the authority of Kingship, but she did not.
When I said "Ability" I meant it in the sense of "Can actually do the thing in the face of opposition", but I can see on looking back that I phrased it badly.
That is, when Alison says "I wanna kill Mottom" and Mottom goes "But I don't wanna die" who wins that argument? Because on one hand we have a college girl who's had the Key for barely any time at all with no idea what she's doing and on the other, we've got a centuries old sorcerer-queen who Highlander'd her way to a seventh of the Name of God.
That's really not the kind of fight that it's at all reasonable to expect Alison to win.
As for Jagganoth, he's
explicitly held back by the fact that if he starts up his campaign to annihilate the multiverse, he's gotta go 1v6 with the Demiurges. Except with Nadia dead, that's 1v5 and if Incubus stays out or switches team, those odds get a lot better for Jagganoth.
As for Alison saying she'll be King. Let's leave aside that Royalty and Kingship are things with a distinct meaning in KSBD's metaphysics.
King of What? Mottom's territory?
Sure, let's say she walks up to Mottom's throne, plops herself down and shows off Nadia's severed head and says "I'm in charge now. Any of y'all bitches got a problem with that?"
Let's say that everyone there immediately bends the knee. Now Alison is in charge of theoretically 111,111 universes, practically less. Now she's gotta run around and try put a stop to all of the shit Mottom's empire and guilds do that she doesn't like. That's not something that happens over night.
Meanwhile, what about the other Demiurges? They aren't going to sit still for this, either personally or militarily.
The best possible response is that they offer her a seat at the table and Alison takes it. Meanwhile under the table, they're doing everything possible to screw her and Alison's left having to try and compete with people with centuries more experience than her at this shit. Meanwhile, her own government is going to be fighting her over the abrupt shift in policy between Mottom's "Strip Mine this place to the bedrock" and Alison's "Cut that shit out!"
The worst case response is that the rest of the Seven declare war on her and likely each other as they all rush about trying to be the first one to take Mottom's and Zoss's power for themselves. The Universal War Rekindles and everything is on fire.
The state of the multiverse in KSBD is a cold war held in
tenuous balance. It was never going to last. Alison is the stick of dynamite thrown into that powder keg by Zoss. It is a situation that was brought up by many powers and many people acting on their own will.
Does she bare responsibility for the fallout of what's going on? Yes, of course. She was the one who decided to march into Mottom's palace over Cio's protest and against all common sense. She was the one who pushed to break into Yre and try and rescue Zaid, once more over strong protest.
Nadia was the one who let fear shape her life and never sought a way to prolong her life that didn't rely on her husband's demon crotch tree. Then she was the one who decided to fly her floating place straight into Yre expecting to find Alison, a good punch up, or both and was perfectly happy with any of those outcomes.
Alison bares responsibility, but it's unreasonable to foist it all on her.
