I might of course be misinterpreting this, but I do think that Royalty is about passivity, or at least affecting the world as little and as gently as possible. Yes, there's all this talk about the blade of want, but in the moment in which Maya recognized Allison's wisdom (or so I interpret the scene), Allison talks about how swords are stupid. YISUN never commits an act of violence that I know of, and simply lets all things develop, and the final act of the gods was the same as YISUN's: suicide. In annihilating themselves as immortals, they set the example for mortals to annihilate their selfs (note the difference). If we accept Intra and Meti to have been Royalty (I guess they could have been lying about that), then I think that also tracks; neither of them were pacifists, but Meti (once Royalty) tried to teach people to just live simple lives, not to take down tyrants and make the world a better place, while Intra did kill people, but afaict only if he happened to come across them on his path. I don't think she is Royalty, but White Chain recently came to a realization that allowing yourself to be crushed by the wheel of history could be the natural, correct way to act.
Nadia's issue was, as I understand it, participating in the evil of power. She was passive only insofar as it benefitted her, allowing countless women to be murdered for her peaches of immortality; she could be quite active to kill, for example, emmissaries that had offended her, and to preserve the status quo of her being Imperiatrix, ravaging countless worlds. But she did shed some passivity, after her encounter with Allison, and started killing more of her courtiers. I don't think Mottom as we see here in the Treasure Fortress of Yre was more Royalty than before.
According to Abbadon, Royalty is the understanding of the true name of God, which is of course "I". Since every "I" is YISUN, that means every "you" is YISUN, every "he", "she", "they", "it", and so on. I don't see how death can still matter to someone who truly understands this (but I may be biased bc of my affection for and interpretation of the Heart Sutra). The multiverse is an aspect of YISUN. If the multiverse dies, YISUN will still be there, since YISUN transcends life and death to begin with.
Bit of an aside, but does Jagganoth want to destroy the multiverse? That was Metatron's plan, but Jagganoth at least claims to be against it:
Mind you he's not likely to be trying to create a nice world for everyone to live in, either, and I have gotten the impression that the characters straight up don't believe him (tbf, I probably wouldn't risk it, either).