Now that they've tipped their hand? Absolutely. The Heralds managed to infiltrate and ally themselves with collaborators in the highest offices of Up government. They could've gotten the Catastrophists to come to them just by opening their arms.

[She looks thoughtful.]

I'm worried about what he said. About the fires. They might be trying to do what they did before to end the world, but what I can't figure out is what they'd hope to accomplish with it.