it's not the Catholic Church in Poland's role to be the state of Poland's foreign ministry!
Oh, Catholic Church in Poland is involved in politics whenever suits to Church. That for starter.
Then, Catholic Church in Poland is legaly under jurisdiction of Vatican. Meaning, obedient and involved in, or suppose to be involved in top clergy of Vatican. By anology, it means that Catholic Church in Poland knows for Vatican - Germanic ties that are against interests od Poland but tolerate it and most probably work against Poland.
But, let us go back to Poles and Serbs and what would be consequence if Catholic Church in Poland failes to openly support Serbs in dispute with Vatican that organized and directly commited genocide on Serbs.
In short, the geo-strategic shift for Poland, if Serbs start to see Poland as lethal for them would lead in dissolution of Poland.
Think of cohesive forces within Poland. What are those?
1. Sarmatism
2. Vatican and Catholic Church
3. Western European cultural impact
4. Slavdom
Now, Vatican and Catholic Church weakening. Western Europe is dissapointement.
So, Sarmatism and Slavdom.
What is Sarmatism? Its Meta ethnicity to all Poles. But for Lusatians, Kashubs etc who are still Serbs, Sarmatism is what it always had been and what is public secret, Sarmatism is Srbism.
How long, you think Poland can exist as state confronted with Serbia and Sarmatism, with core center and being of its civilizational and ethnic aspect? Not long.
Plus, add to it factor of Slavdom. You know what happens to Poland if factor Slavdom understand it as a problem? Man, its all what Germany wait to offer deal to Russia for another partition of Poland.
Now, with Serbs against Poland, you dont have Sarmatian factor as cohesive force and Poland can never be restored as state. Exactly where Vatican and Germany pushing Poland when prevent official Poland and Catholic Church in Poland to side with Serbs.