But it wasn't a theocracy when we attacked it. It wasn't when the Crusade was called. It still isn't a theocracy. Maybe I should just declare Phantaria a "reforming theocracy" and say we'll be one "soon" and see if I can get a Crusade called in our name and the full armies of Astroism at my beck and call because we'll be one "any day now, guys."
But regardless, the state and health of Astroism in the area was under zero threat. You can say that all you want but bottom line this had nothing to do with religion and everything to do with Hireshmont's buddies. Which is fine that happens, but just don't be shady about it and call it what it is.
Terran was and is a theocracy, facts be damned. Government is what you make of it. Hireshmont managed to convince people that Terran is, for all intents and purposes, a theocracy. If you can convince people the same of Phantaria, be my guest.
This war is not about Hireshmont and his buddies. Choosing to think that way will continue to leave Kale blindsided by events. Believeing that it was a secular conflict about unifying Terran left Kale vulnerable, and continuing to believe that will continue to leave Kale vulnerable. He needs to realize it is, in fact, a religious war, and needs to find a way to win the religiosity of it. I wasn't going to suggest this earlier, but here's a thought: outflank Hireshmont in the religious realm. Convert and raze the Triunist temple in Shokalom.
Astroism's elders would have to admit the goal of the crusade was essentially accomplished; the faith was defended (even expanded!), and then Kale might have more leeway in how he deals with Terran. A war between Libero and Morek does not require a crusade, for example, or even Summerdale and Morek, because nobody has any doubts that the relative position of SA is at stake. But a Triunist Republic vs. Astroist Theocracy? Yeah, the relative influence of SA is totally at stake. Advice on how to win the propaganda war: convert and then carry out radical acts to demonstrate your zeal.
In absolute terms, you're right, SA wasn't under threat. But absolute terms don't matter, RELATIVE power is what matters, and the RELATIVE balance of power WAS under threat.
Or think of it this way: in Terran's war with Kabrinskia, Hireshmont began putting out feelers about his conversion before the war began. He was in close communication with multiple elders (including Mathurin) for weeks prior to war, and continued this non-political discussion during the war. He converted during the war (or right on the cusp of it, I forget). SA could stay out because Kabrinskia was the aggressor and because the trajectory of SA power was obvious: no matter who won, SA was going to be stronger.
But the current situation is different. If Phantaria wins, SA will be weaker. An influential Elder will lose secular power and the replacement power will be demonstrably less committed to the church's priorities and interests. On the other hand, church support loses the church nothing (people who hate the church will hate it anyways), but potentially gains it a theocracy.
And for all that people claim that these kinds of things turn people off to SA, I call bologna. People don't join religions in a medieval game because they want to teach the values of moderation and tolerance. We do it because it's a path to power and an excuse for war and a chance to interact with other players. So yeah, the losers will be bitter at SA: and everybody on the sidelines will get a take-home message– "Conversion is the path to power."