Latin America and Sub Sahara Africa and Southeast Asia have seen big upticks in Catholic conversion and Catholic family growth, while in the US and Europe they've been flat or shrinking.
I'm sure it isn't a coincidence that these countries are opposed to the conflict, as continued war in the Ukraine has denied them access to the agricultural production of the region (during a climate-change induced famine, no less). The war itself isn't exactly doing favors to climate metrics, either.
Add in that the primary advocates of the war (the US, the UK, and Germany) have an absolute shit reputation in these regions (West Germany famously continued to send arms to Apartheid South Africa well into the 1980s, the US has completely fucked its relationship with Pakistan in the latest rigged election against a wildly popular prime minister Imran Khan, the UK keeps trying to send all its Ukraine refugees to Rwanda), they aren't overly sympathetic to the Western-backed side in the conflict.
So now enter the Pope, a guy who is forever "anti-war" in the most basic sense of the word and will advocate for a ceasefire in virtually every conflict. Image how much of his constituency is howling at the absolute waste and destruction, partially at their expense, that's driving up food and energy prices globally when they can least afford it.
Is it any surprise he just wants this shit to end already?