Frankly, if -1.5 was winning I'd be OK with it. It's not going to kill us. But I don't agree that CA is in danger, and I'm generally in conservative/crisis mode. In crisis mode I don't think we should volunteer for social disruptions without a countervailing narrative benefit.
And because I disagree with you on the impact of the genocide on our culture, I don't see that benefit.
Thing is, there is a narrative benefit to the refugees: habit of generosity. It is not a number, but it played a part in how our society is, for example, more accepting of female rulers or non-orthodox genders in priesthood and so on and so forth.
Xenophilia and pluralism are strong habits, but they need cultivation.
Or, if you mean
immediate narrative benefits and do not care all that much about long-term ones (which is a position I can respect with the ongoing crisis: you have to survive to enjoy long-term benefits and all), well, bragging rights about our climate.
I semi-suspect that telling people "Hey, our climate is stable, git gud, farming-scrubs" is likely to give us more ammo in arguing with other faiths because this is a freaking miracle of ecology.
Granted, it comes with having even more people to argue against, but still - being
known as generous people (remeber, the
only thing Swampers and other Lowlanders far enough know about us is us burning down Xohyr - they must think we are murderous horde of semi-nomads or something) probably would do narrative wonders to our civ, maybe even making wars less likely due to family contacts and so on. ALso, knowledge of situtation in foreign lands - AN has mentioned we'd get Swamp People refugess, so that's a source of info on them and...heh.
And Swamp People refugees give a shot at
stealing their techniques of farming at this weather - they were noted as outright prospering due to climate change.
The more refugees we take, the better are our chances to get yet another farming tech, tailor-made for this shit going on, maybe even rice (dunno what grows in the swamps)?
So there: both long-term benefits and short-term ones. Good enough?
I mean, sure, okay, but immigrants still bring strife and unrest and disease with them, and that hurts us - especially when we have our hands entirely full with other stuff. If you remove the abstraction of the numbers, the fact is that we don't want the problems that refugees bring while our polity is already engaged in multiple wars, in need of massive internal reform, and struggling with cultural disunity.
We do want
benefits they bring though. Listed above: both long- and short-term ones.