Asmodia requests a moment to think for a bit after getting Cunninged. Many of her thoughts are screened; hopefully Security is not Detecting right now, since Keltham isn't around, but worst-case she's still got the Gorthoklek order.
...so the way that she thinks this actually works, is that any world has something like a Resistance or Vulnerability to the tropes, or a Difficulty Check for the tropes. The decisions Sevars make within the world can possibly make their world harder or easier for the tropes to manifest in, though, obviously, the Sevars may not know which choices of theirs really do that. They also don't know the tropes' strength, what amount of Vulnerability they need or Resistance they can overcome.
You could, at the very least, if deciding not to talk about any other demon lords, which makes things more difficult for the tropes, try offsettingly to do something nice for the tropes, to keep it all in balance? Or maybe you've got to do a lot of nice things for the tropes, or somebody has to, before they can get to your universe at all?
...Nethys, Cayden Cailean, and her own sponsor, possibly seem to think that their correct move is going along with the tropes.
......but Asmodia can't tell if this is something those gods are creating the appearance of, and want Sevar to believe; or something they're treating as their own hidden power and special tactic, which Asmodia should not reveal.
"This is unfortunately not a case where 4 more points of Intelligence immediately causes everything to become clear," Asmodia lies. "I think we're at least not supposed to do anything that makes life more difficult for the tropes unless the Most High signs off on that."